Some vulnerable Democrats voted against the financial reform conference report that passed the House Wednesday, The Hill's Silla Brush reports.

Reps. Travis Childers (D-Miss.) and Bill Owens (D-N.Y.), for instance, voted for the House version of the bill but not the conference report, which passed by a 237 to 192 margin.

Travis, who faces a rematch with state Sen. Alan Nunnelee (R), said he was concerned about the use of funds from the Trouble Asset Relief Program (TARP).

"Its provision to use $11 billion of TARP funding instead of requiring big banks to pay for their own mistakes lets Wall Street off the hook," Childers said in a statement. "I voted against TARP twice because American taxpayers shouldn’t have to bail out Wall Street for its own wrongdoing."

Owens faces a potential three-way contest with businessman Matt Doheny (R) and Conservative Party candidate Doug Hoffman. The first-term lawmaker defeated Hoffman in a November 2009 special election. His office has not released a statement about his vote.

Rep. Jim Cooper (Tenn.) was the only other Democrat who switched from "yes" to "no," but he's not expected to face a tough reelection race.

Meanwhile, the three Republicans who voted for the measure were Rep. Mike Castle (R-Del.), who is running for the Senate; Rep. Joseph Cao (R-La.), one of the most vulnerable Republicans in Congress; and Rep. Walter Jones (R-N.C.).