Well, he did win Democrat votes as well because the party put up such horrible candidates twice.

The pnly unforgiveable sin in USA politics.

Do you have any evidence that this was the reason?

The challenge is that with a 2-party system it was take a chance Trump wouldn't be worse than he was the first time, or continue with the Democratic platform, which is not necessarily in alignment with a LOT of people. My personal feeling is that this administration has driven the country off a cliff in a spectacularly fast order. I also think the Democrats positions had us heading for a cliff, but it was at least further away.

Trump ran on solving SOME of the right problems. He and all the Republican leadership unfortunately have NONE of the right solutions. I fear the Democrats will think that a rebuke of Trump this election would be a mandate for many of their polices. It isn't, it is a rebuke of the horrible job Trump has done.

Tax the rich, solve healthcare, take note that our country is in an economic battle with other countries, and realize the best form of freedom is when everyone has economic opportunity and stability. Both parties "say" they want these things, the Republicans outright lie about it and the Dems do nothing.