Following the break is a complete roundup and ranking of Ohio races for the U.S. House of Representatives. I have separated them into Republican-held and Democratic-held seats and divided each into tiers. Within each tier they are ranked in order of likelihood of changing parties.
Democrats were very successful in 2006 in winning a U.S. Senate seat, four out of five statewide offices, and a net gain of seven seats in the Ohio House of Representatives, but the U.S. House races were a relative disappointment. The party gained only one seat and watched two promising races end in narrow losses after recounts. In this cycle Ohio has three open GOP seats and perhaps four or five races altogether that already look very promising, with another two or three that could be added to that list. The DCCC has already added three races to their "Red to Blue" program and is likely to take an interest in at least two more. In other words, Ohio is once again a critical congressional battleground.