One has to admit that this version of the Republican Party has made the decision easier than at any other time in recent political history. Trump is dividing us one from another, he is daily alienating us from our historical allies, and he is encouraging the mass murdering psychopath Putin to keep it up since Trump has told Ukraine to surrender a third of the country.
The Republican Party is about the rich and the powerful, but they don't have the numbers to win elections, so they have, for a long time, used the "southern strategy" of Lee Atwater to get out the racist white southern and midwestern vote.
Was always thus, will always be thus, until the far right finally destroys our democracy and we are a pretend democracy with a gang running the show, a gang of billionaires.