Current Events > 538 has its governors forecast out!

(+) Yeah! (+)

https://projects.fivethirtyeight.com/2018-midterm-election-forecast/governor/
You can mouse over individual states to see a projection, and the table below has more detailed statistical information on each race(they're sorted by projected margin of victory).
It's a good way to get a feel for the lay of the political landscape.