[dead]

It won't be Christie (unpopular in his home state, which is not in play anyway), Palin (had her shot, very high negatives), Gingrich (ancient, backwards looking), Guiliani (too NYC), Cruz, Rubio, etc.

Longshot - Walker.

But it will be Kasich - executive political experience, swing state, patina of gravitas, not too conservative as focus moves decidedly towards the left. His sober persona counters Trump's loose cannon personality.

[Cobra64]

Kasich is an open-borders asshole who would never be invited to a State dinner. Trump already said Kasich is disgusting.

[Ancesthntr]

Nope on Kasich - thoroughly anti-gun, he will cost Trump votes in many states.