In short, this article by Nate Cohn, the NYT chief political analyst, contends that Trump supporters either do not respond to political polls or if they do respond, they don’t exhibit their support for Trump. The article itself is from late 2022, right before the mid-term elections.
In it, Cohn notes that in 2020, white registered Democrats were more than 20% likely to respond to surveys than white registered Republicans.
Cohn also noted that the 20% disparity in 2020 grew to 28% by late 2022. Cohn’s conclusions was that there were not only too many Biden Democrats responding, but that there were likely too many Biden Independents and Biden Republicans responding.
He has not updated his findings, but is considering doing so.
Cohn is responsible for the methodology for the New York Times/Siena College polls.
https://archive.ph/uUGWd