There are Republicans that don't like what Trump is doing. I'm not saying there's a big defection. Just saying which side will lose more voters to cross ticket voting. You really think more Democrats will vote for Trump than vice versa?
He won 94% of the Republican primary vote. Obama won 88% of the Democrat primary vote. Republicans are going to vote Republican as high as they usually vote Republican. There is not going to be anymore cross voting than there normally is. People stated the same thing about “never Trumpers in 2016.” To some people’s surprise, more Democrats actually voted Trump than Republicans voted for the running Democrat: How Groups Voted | Roper Center for Public Opinion Research