Ann Selzer, who did this poll, is agreed by many to be the most accurate pollster in the US.
Suggests independent voters are breaking for Harris in a big way in the finishing straight. Probably applies way beyond Iowa.
"The results follow a September Iowa Poll that showed Trump with a 4-point lead over Harris and a June Iowa Poll showing him with an 18-point lead over Democratic President Joe Biden, who was the presumed Democratic nominee at the time.
“It’s hard for anybody to say they saw this coming,” said pollster J. Ann Selzer, president of Selzer & Co. “She has clearly leaped into a leading position.” ...
The poll shows that women — particularly those who are older or who are politically independent — are driving the late shift toward Harris.
“Age and gender are the two most dynamic factors that are explaining these numbers,” Selzer said.
Independent voters, who had consistently supported Trump in the leadup to this election, now break for Harris. That’s driven by the strength of independent women, who back Harris by a 28-point margin, while independent men support Trump, but by a smaller margin.
Similarly, senior voters who are 65 and older favor Harris. But senior women support her by a more than 2-to-1 margin, 63% to 28%, while senior men favor her by just 2 percentage points, 47% to 45%."
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