There can't be a third party candidacy. The filing deadlines are such that you won't even be able to compete in a third of states once the conventions happen.
At best Trump might be able to get onto the Constitution party ticket or something, But the way the rule shave been set up makes it impossible to run a third party candidacy if you haven't already prepared by the time of the convention.
What I'd expect is Kasich as the President and a nutbag right winger as VP if they were going down that road, similar to how Palin energised the far right in 2008. Of course its extremely doubtful because he's such an incredible loser through this primary process - it's much more likely the party would nominate someone who didn't participate at all, like Nicki Haley. That way they aren't tagged with the "being beaten by Trump" label, and the party can craft a message around them designed to appeal to the broader republican base.
At best Trump might be able to get onto the Constitution party ticket or something, But the way the rule shave been set up makes it impossible to run a third party candidacy if you haven't already prepared by the time of the convention.
What I'd expect is Kasich as the President and a nutbag right winger as VP if they were going down that road, similar to how Palin energised the far right in 2008. Of course its extremely doubtful because he's such an incredible loser through this primary process - it's much more likely the party would nominate someone who didn't participate at all, like Nicki Haley. That way they aren't tagged with the "being beaten by Trump" label, and the party can craft a message around them designed to appeal to the broader republican base.