Just curious. The early aggregate 2010 gubernatorial predictions on the Atlas:
https://uselectionatlas.org/PRED/GOVERNOR/2010/pred.phphave the Dems picking up 6 statehouses from the GOP and the GOP picking up 6 from the Dems, for a net change of zero (oh, except for an Indy pickup in RI). All of the individual predictions look reasonable, and I could certainly see something like this happening next November. Has anything like that ever happened before though? With that many goverships swapping from one party to the other, and not all in the same direction?
I can't think of any recent examples, but I'm not that knowledgeable about gubernatorial elections from more than a few cycles ago.