The Dem vote collapsed through apathy, inbetweeners going to Trump because of the economy and immigration, Gaza (which destroyed the Arab American vote and the young vote which was a massively activated demographic in 2020) and various other issues (their failure on reproductive rights also lowered the female vote, another key in 2020).

As I commented earlier, I agree that it was Dem apathy had contributed + the rest. Nevertheless, I also think it was the working class that had most grievances and needed 'change'. It seems likely.