I don't think he'll do it. Like Wolverine, I could see him going for VP, but that seems unlikely. Governor Snyder doesn't seem much interested in higher office.
Unions will never forgive him (or Walker, Pence, or Kasich).
Yeah and that's why we have Governor's Schauer and Burke right?
Sure, and don't forget Governor FitzGerald. That being said, if any of them run and are nominated, the unions will carpet-bomb the industrial swing states with attack ads (along with the millions in negative ads the DNC and the Democratic candidate will air spend.)