No Tossups map:
Still very early, but the most likely outcome I see right now is D+6, or D+7 but Nevada is a complete tossup due to D's small bench.
In Maryland, Hogan as of now, is favored, but the state hasn't had a two-term Republican governor since the 1950s, and doesn't have as much of a history of electing Republican governors as other northeastern states.
Baker in Massachusetts and Scott in Vermont are popular, and both states have histories of electing Republican governors, so they are safer than Hogan.
A couple states have had unpopular governors that might create an opening for the opposing party. Republicans in Maine, Michigan, Kansas, and Oklahoma could have tough races, while Democrats in Connecticut are likely gonna be bogged down by outgoing unpopular Malloy. Wisconsin is a bit of a unique case, because while Walker is unpopular, Democrats don't have a good bench here, and Walker is an incumbent.