Steve Driehaus
Driehaus swept into this seat in 2008 in part by channeling the energy of the Obama campaign. (His district includes Cincinnati, which has a sizable African-American population.) But he knocked off a battle-hardened seven-term Republican, Steve Chabot, to get there, and now Chabot is back for a rematch. Driehaus, a state senator before he ran for Congress, is a wily politician himself, but he will have to defend his votes for two controversial Democratic priorities: cap-and-trade and health care reform.
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Last updated August 27 2010: 5:42 AM ET
