High early voting totals exceeding 29 million ballots by late October, running ahead of 2022 paces in multiple battleground states, combined with elevated voter engagement and a Democratic enthusiasm advantage, anchor trader expectations for total House turnout near 115-125 million votes. Republican mobilization efforts targeting lower-propensity supporters and historical patterns where midterms draw 40-45% of eligible voters introduce uncertainty, while mail-in ballot trends and potential Election Day shifts keep the distribution tight. Recent generic ballot leads and redistricting effects further shape assessments of final participation without clear separation among leading ranges.