NOT ONE person who voted TRUMP for President would now vote Kasich for President.
Think about that.
This stunt won’t change a single vote.
BTW - I should relate an 2018 encounter I had with Rep. Mike Fitzpatrick(PA-1) my Congressional Swamp Critter at CB South HS where I vote.
I said “Mike I have held my nose and voted for you. That will not happen again if you do not get behind Trump. Of ALL Republicans you are the 4th most likely to vote against legislation that he supports. You have been silent as Democrats have tried to destroy him. I am going to make you a promise in 2020, for the first time, I might not vote straight R. I, of course, will NEVER vote for a Democrat. BUT, I won’t vote for you either.”
The POINT being that all these NEVER TRUMP Republicans will never win another National election.