Endangered Rep. Chet Edwards (D-Texas) wouldn't commit to backing House Speaker Nancy Pelosi (D-Calif.) again after the November elections when asked over the weekend.

"No, I've made no commitments for speaker," Edwards told The Washington Post. "Until we see the outcome of this election, I don't even know who will be running for speaker." 

The 10-term congressman, who represents a heavily Republican district in central Texas, is in a tough reelection fight this fall against Republican Bill Flores. 

Last week, Edwards launched a new campaign ad claiming he resisted pressure from Pelosi and the White House on healthcare reform. 

The 30-second spot took aim at the Democratic leadership, opening with the words, "When President Obama and Nancy Pelosi pressured Chet Edwards, Chet stood up to them and voted 'no' against their trillion-dollar healthcare bill."