Actors have an edge...
First, they have dealt with liberal psycho hose beasts en masse, know their foibles and mindsets and understand the media types that will try to trash them. They know their enemy better than any average politician and they also know how to play the money networks and manipulate the media by helping them make money.
I suspect he will do fine. The current crop of GOP candidates is uninspiring, at best, and it would take little for him to win public support.
We'll get to see how it plays out.