The turnaround is attributed to women, particularly those aged 65 and older, who shifted from favoring Trump to supporting Harris 63% to 28%. The strict abortion law in Iowa may have played a significant role in this shift.
Women aged 65 and older showed a significant shift, favoring Harris over Trump by a margin of more than two to one (63% to 28%).
Selzer's method involves polling forward, aiming to reveal the future electorate without favoring past voting patterns. This contrasts with other methods that may wait to past votes, potentially skewing results to look like previous elections.
The abortion issue, particularly the six-week ban that went into effect over the summer, seems to have driven a significant shift in voter preferences, especially in congressional districts, leading to a tilt towards Democratic candidates.
Selzer's method controls for response bias by ensuring that the demographics of her sample match the known population parameters of Iowa. This includes weighting the sample to reflect the likelihood of older voters, who are more likely to vote, being correctly represented.
Selzer was cautious but not surprised, having seen similar dramatic shifts before. She noted that her methodology, which makes no assumptions, confirmed the unweighted data showing Harris in the lead, despite it being contrary to conventional wisdom.
Selzer believes her polling stands out because it aims to predict the future electorate without relying on past voting patterns, which she calls 'polling backward'. This approach seeks to reveal what the electorate will look like in 2024, not just replicate 2020 results.
The congressional race results showed a significant tilt towards Democratic candidates, particularly in districts where the abortion issue was prominent. This organic shift in congressional races may have influenced the presidential race towards the Democrat as well.
Few states are as red as Iowa, and yet the legendary Iowa pollster Ann Selzer found that Kamala has leapfrogged over Trump to take the lead there. The turnaround is due to women—particularly women 65 and older, who previously tilted toward Trump, but now favor Kamala 63% to 28%. Iowa's new strict abortion law could be a factor. J. Ann Selzer joins Tim Miller for a special Sunday pod.
show notes Des Moines Register story on the Iowa Poll) Des Moines Register story on Iowa's congressional races )