It's kind of word salady but I think it means "Democracts after Biden wins and they spend the next 4 years fighting the actual left wing of the party instead of fighting Republicans. And then Republicans win that election (2028), and carry on with their plan to end elections in the U.S. (and install some kind of Christian theocracy)."
But thats prettty short sighted. It assumes that going and voting in one presidential election is going to to get you the politicians and policies that you'd like which is obviously false.