If Trump loses does Pence take over the top of the Republican Party? What happens to "never Trumper-ers"?

 Wondering about the questions in the title.  What do you guys think?  Especially curious is what happens to the anti-Trump Republicans?

They can't stay with the Dems...they'll be purged with a quickness.

They're gonna try and take back the Republican party but I'm sure at least half that party will hate them forever.

So what becomes of those folks?