And yet in the favorability polls, Trump was under water by 9%, which means 9% of the people who supposedly voted for him didn't like him. Meanwhile, Harris was on the plus side in favorability. So, the available evidence doesn't back up your theory. You obviously haven't spent any time at all reviewing the article because the idea that it could be accounted for by unpopularity is dealt with therein and in other places.

For example, her vote totals in the swing states were equal or greater than Biden's performance in 2020. In addition, there's never been an election where a Dem presidential candidate didn't flip any counties from red to blue. Even in 1984, which was one of the biggest landslides in American history, in which Reagan won every state but Mondale's home state of Minnesota and DC. And yet Mondale still flipped 10 counties from red to blue across the country. Obviously Mondale was a much more unpopular candidate than Harris, the states he won were far fewer and his vote total was far less, and yet Harris didn't flip any red counties blue creating the impossible "Three Color Map".

Plus, there's the "Russian Tail" which is a clear sign of vote flipping, as used by the Kremlin in recent Russian elections.