I voted against the mongoloid he endorsed in my district- Katie Arrington. Nancy Mace won the Republican nomination here.
That said, given the choice between most Trump-endorsed republicans and a candidate who will be a reliable vote for leftist democrat policies, I would go with the former.
Here's the problem: if he's not president and there's nobody to hold him at least a little accountable, there's no ****ing telling what he's going to ask his sycophants to do. Could be literally anything.
I would suggest that voting for leftists in the face of trump candidates is actually the more prudent thing to do long term. The idea being that if given a chance to rule, leftists will do a bunch of insane shit the majority of Americans hate, and there will be significant backlash that can be used by Romney/bush Republicans to win back seats.