If you keep supporting the lesser of two evils, don’t complain any more about how quickly the country is going to hell in a handbasket. When and how does the compromise stop, anyhow?
That way they might have a chance to have a seat at the table if voters from their party help swing a state in the direction of that candidate.
If the GOP nominates Cruz or Trump, then I think those would be acceptable candidates to the Constitution Party or American Independent Party or whatever they are calling themselves this year.
I voted for that lawyer guy one year instead of Bush, and I'm glad the Constitution Party didn't support Bush, but I could have seen them supporting Santorum in opposition to Romney.