There are prochoice Republicans though, especially in bluer states/places. Massachusetts' governor and Susan Collins, for example. It's more frequent than you'd think.Republicans have openly been coming for abortion for decades. They've been passing more restrictions nationwide. If it was a make or break, we would have already hit the whole break thing.
Like I, in the absence of a decent libertarian candidate, would vote Red for a candidate against gay marriage, cause there's no chance that gets overturned. Until it does, then I really got to consider voting blue