Oh, and tell me again how the national environment impacts these governors races: That's why Mike Beebe lost in 2010, Charlie Crist lost in 2006, Tom Corbett and Sean Parnell won in 2014, and Dave Freudenthal got crushed in 2002, etc. etc.
It may not make much sense, but it's true. Many GOP governors would have lost reelection in 2014 had Romney won. Many Democratic governors would have lost in 2006 had Kerry won.
Sure, there's always some exceptions...Corbett was just so unpopular even an unpopular Democrat in the White House couldn't save him.