The split of votes by party is misleading. We never know how many Democrats will vote for Trump, but it’s a lot higher than Republicans voting for Hillary.
If a Republican wanted to vote for Hillary, it would mean that he or she was enthusiastic for her. I cannot imagine that EVER happening. That person would have to hang his head in shame for the rest of his life if he ever told anyone. Even Democrats have to hold their noses.
Assuming that Republicans are reasonably intelligent, they know that Hillary will be a complete disaster for America. They will not pull the lever for her.
[Although he professes support for her, I doubt that even Colin Powell will actually vote for Clinton when it comes down to it]
I don’t think you understand how deep the #nevertrump feelings run. Or how RINO the mainstream Republican party can be. And how much the Wall Street Journal contingent wants the same open borders Hillary wants. I don’t see a big grass-roots movement for Republicans to vote against Trump, but a significant portion of these avid policy wonk and political junkie type of Republicans will vote against him.