Also, a separate but very important thing to bear in mind, if any of the groups I mentioned, including tea party, Christian nationalists, and even Trump, had tried to run third party instead of taking over the GOP from the inside, each would have fallen flat on its face, and the Republican Party today would still be fielding candidates like John McCain and Mitt Romney.

The same applies to the Democrats. Voting third party or not voting at all in general elections won’t fix the Democratic Party. The primary way to do that is voting in primary elections or pestering your existing representatives who aren’t up for reelection this year.