Democrats sure picked a great year to mess up. Had Democrats had a decent year in 2010, they could have made it so the only states Republicans controlled were Tennessee, Utah, and Texas while Democrats controlled New York, Illinois, Arkansas, Maryland, Wisconsin, Minnesota, North Carolina, and maybe even Virginia, and Michigan. Obama really screwed the Democrats at the worst possible time.
Ohio would have been interesting at best for the Democrats because after drawing a VRA seat in Cleveland it's virtually impossible to get more than 3-4 other seats that are reliably Democratic. The state is naturally gerrymandered for the Republicans. I've tried to draw a Democratic gerrymander a couple times and it's really hard.
It can be done though, I've drawn solid map that would reduce the Republican delegation to (depending on who wins primaries) Boehner, Schmidt/Austria (Austria favored), Jordan/Latta (Jordan favored), and Renecci/Gibbs/Tiberi (any of them could win though Renecci is slightly favored). It is pretty ugly though.
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