Governor: My head says Kasich wins by 3-5%, but my gut says Strickland manages to hang on by 1-3%. Hopefully, the recent polls showing a tighter race are a trend rather than a small bump/fluke (but that would require more polling).
Secretary of State: Husted (R) would be running away with this if he weren't so obviously a religious-right/christian coalition type. It'll be closer than it should be and O'Shaughnessy (D) could win, but I don't see it happening (plus Husted is raising far more money). Husted by 5-8% (if Kasich wins), Husted by 3-5% if Kasich loses.
Treasurer: Boyce (D) is doing inexplicably well, compared to what you'd expect. Depends on the Governor's race. Mandel (R) by 3-6% if Kasich wins, Boyce (D) by 1-5% if Strickland wins.
Auditor: Similar to Treasurer, depends on Governor's race. Yost (R) 3-6% if Kasich wins, Pepper (D) by 1-5% if Strickland wins.
Attorney General: Cordray (D) by 2-6%
Senator: Portman by 10%
U.S. House: Tiberi (R) by 8-12%