1. California
2. Texas
3. New York
4. Florida
5. Illinois
6. Pennsylvania
7. Ohio
8. Michigan
9. New Jersey
10. Georgia
California, New Jersey and Georgia have Democrat governors now. NJ and GA aren't chump change and the Democrats are happy to have them-- and in GA, the legislature is Democrat and in NJ, the legislature is split (tied and Democrat). They do love having California, but regardless of Davis, they have a very good chance of picking up IL, PA, and MI off this list this November to counteract the loss.
Also below the Top 10, the Democrats fair much better. Here are the next several states on the list: NC (D), VA (D), MA (R, but could easily go D in Nov.), IN (D), WA (D), TN (R, but could easily go D in Nov.), and MO (D).
Wyoming is number 50.