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icon for Republican Senate odds hit __ by October 31?
Politics·Midterms

Republican Senate odds hit __ by October 31?

icon for Republican Senate odds hit __ by October 31?
Politics·Midterms

Republican Senate odds hit __ by October 31?

Nov 1

Nov 3

Nov 3

Nov 1

Nov 3

Nov 3

NEW

$17,596 Vol.

Oct 31, 2026
Polymarket

$17,596 Vol.

Polymarket

↑ 60%

$0 Vol.

8%

↑ 55%

$0 Vol.

12%

↑ 50%

$2,587 Vol.

20%

↑ 45%

$5,810 Vol.

33%

↑ 40%

$1,924 Vol.

55%

↓ 35%

$3,255 Vol.

89%

↓ 30%

$1,551 Vol.

57%

↓ 25%

$2,469 Vol.

27%

This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds 60% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below 60% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds 55% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below 55% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds the listed threshold for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below the listed threshold ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com is equal to or below 35% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is above 35% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com is equal to or below 30% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is above 30% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com is equal to or below 25% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is above 25% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.Republicans currently hold a 53-47 Senate majority and must defend 23 of the 35 seats contested in 2026, including several in states carried by Democrats in recent cycles. As of late September, polling averages and forecaster consensus show Democratic candidates leading or competitive in multiple battlegrounds such as North Carolina, Ohio, Maine, Iowa, Alaska, and Texas, while holding most of their own seats. These trends have produced models projecting Democratic net gains of three to five seats, placing chamber control in a narrow range with neither party holding a strong edge. The October 31 resolution window precedes Election Day by days, leaving limited time for additional shifts from national conditions, candidate events, or late polling movements.

This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds 60% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No".

An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below 60% ends any run of consecutive hourly odds values.

Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point.

If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No".

If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No".

If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered.

The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds 60% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below 60% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.
Volume
$17,596
End Date
Nov 1, 2026
Market Opened
Sep 22, 2026, 12:25 PM ET

Resolver

0x65070BE91...
This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds 60% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below 60% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds 55% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below 55% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds the listed threshold for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below the listed threshold ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com is equal to or below 35% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is above 35% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com is equal to or below 30% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is above 30% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com is equal to or below 25% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is above 25% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.Republicans currently hold a 53-47 Senate majority and must defend 23 of the 35 seats contested in 2026, including several in states carried by Democrats in recent cycles. As of late September, polling averages and forecaster consensus show Democratic candidates leading or competitive in multiple battlegrounds such as North Carolina, Ohio, Maine, Iowa, Alaska, and Texas, while holding most of their own seats. These trends have produced models projecting Democratic net gains of three to five seats, placing chamber control in a narrow range with neither party holding a strong edge. The October 31 resolution window precedes Election Day by days, leaving limited time for additional shifts from national conditions, candidate events, or late polling movements.

This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds 60% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No".

An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below 60% ends any run of consecutive hourly odds values.

Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point.

If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No".

If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No".

If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered.

The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds 60% for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph on that option's detail page. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below 60% ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.
Volume
$17,596
End Date
Nov 1, 2026
Market Opened
Sep 22, 2026, 12:25 PM ET

Resolver

0x65070BE91...

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Frequently Asked Questions

"Republican Senate odds hit __ by October 31?" is a prediction market on Polymarket with 8 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "↓ 35%" at 89%, followed by "↓ 30%" at 57%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 89¢ implies that the market collectively assigns a 89% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Republican Senate odds hit __ by October 31?" has generated $17.6K in total trading volume since the market launched on Sep 21, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Republican Senate odds hit __ by October 31?," browse the 8 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Republican Senate odds hit __ by October 31?" is "↓ 35%" at 89%, meaning the market assigns a 89% chance to that outcome. The next closest outcome is "↓ 30%" at 57%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Republican Senate odds hit __ by October 31?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.