I think it's important for liberals to realize that the far-right is fully represented by and actively appealed to by the GOP, while the entirety of the left is forced to fall in line with a center-right candidate or a far-right candidate.
Obviously, the center-right candidate is better than the far-right candidate, but liberals have been doing an awful job of actively appealing to leftists. Fascists line up with glee to vote for their favorite demon, while leftists have to vote for someone that doesn't represent their views at all, just not someone doing even more harm.
What would be better is if the democrat party actually threw a bone to leftists. Pass Medicare for all, for example. Instead, we are stuck with voting out of fear, rather than voting for something.