Another key Democrat says he won't vote for a healthcare bill that funds abortions.

"As I said publicly, I can't vote for a bill that will publicly fund abortion," Rep. Chris Carney (D-Pa.) told the Scranton Times-Shamrock.

Carney, who voted for the House bill in November, is regarded as a key vote for the Democratic leadership on the upcoming Senate bill.

Two other Democrats facing tough races -- Reps. Steve Driehaus (Ohio) and Brad Ellsworth (Ind.) -- made similar statements in recent days. The two of them and Carney are thought to be potential members of the bloc of Democrats standing with Rep. Bart Stupak (D-Mich.) over the abortion issue.

Carney, like Driehaus and the Senate candidate Ellsworth, faces a tough race this year.