A reader in Ohio offers an assessment of recent race-switching:

Not huge, by national standards, but Dave Yost, who was planning on running against Mike DeWine in the GOP primary for Ohio Attorney General, is expected to switch to the Ohio Auditor’s race. Mary Taylor (R), current Ohio Auditor, is now running for Lt. Governor with John Kasich. The reason this may be important for national politics is that speculation is that Mike DeWine just wants to be Ohio AG so he can run for Sherrod Brown’s U.S. Senate seat in 2012 as something other than just Citizen DeWine. The official announcement from Yost is scheduled for 2:30 this afternoon.
This is bad news for Ohio conservatives – we really dislike Mike DeWine. I wish he would go away and stay away.
Unfortunately, it looks like politics as usual for the Ohio GOP – GOP kingmaker Kevin DeWine hooking up his cousin Mike.

I don’t have quite as much of a gripe with Mike DeWine as some other folks on the right, but I figure this is why we have primaries. The Columbus Dispatch offers the local take here.