From Straight Arrow · · 1m 40s
Polls project Democratic Senate win but past errors loom
Polls show Democrats likely to regain Senate majority but historical polling gaps threaten accuracy.
In brief
Polls show Democrats likely to regain Senate majority but historical polling gaps threaten accuracy. Polls project Democrats winning Senate majority but historical sampling gaps could lead to underestimation of Republican support. Originally reported by Straight Arrow.
Current polling projections
Forecasters and prediction markets favor Democrats to take over the Senate with 65% to 80% chance of reestablishing majority they lost two years ago.
Key Senate races
Democrats lead in Texas, Kansas, Michigan, Maine, Ohio, Alaska and Iowa with margins ranging from 1 to 11 percentage points.
Polling blind spot
Registered white Democrats are about 30% more likely than registered white Republicans to respond to polls, creating nonresponse bias.
Historical polling errors
Times/Siena polls underestimated Trump by 5 percentage points in 2020, with similar gaps in 2016 and 2020.
Polling adjustments
Times/Siena adopted new weighting process this summer to correct for response gaps but accuracy remains uncertain.
Polling methodology
Polls have changed how they analyze public opinion to prevent flawed forecasts from recent elections.
Past accuracy
Times/Siena polls were accurate in 2018 and 2022 despite higher Democratic response rates.
Current polling uncertainty
Even a 75% chance of Democratic Senate win leaves Republicans a real path to holding the chamber.
Final poll results
Democrat Abdul El-Sayed leads former Rep. Mike Rogers by 11 points in Michigan, the only Democratic-held seat of the seven.
What the polls say
Polls show Democrats leading in all seven key races with margins from 1 to 11 percentage points.
The bottom line
Polls project Democrats winning Senate majority but historical sampling gaps could lead to underestimation of Republican support.
