Democrats: Colorado, Georgia, Wisconsin.
Republicans: Florida, Ohio.
And even though they've gotten shut out of almost everything else, I do think the Massachusetts GOP deserves some credit for having won 6 out of the last 8 gubernatorial elections.
It’s not because of the state party that the MA GOP has been successful in gubernatorial races. The party has historically had no money, rarely fielded credible challengers in swing seats to Democratic incumbents, and openly feuds with their incumbent Governor. Baker, Romney, Cellucci all won despite the inept state party not because of it.