MoveOn.org claims more than 15,000 veterans and military families have signed their petition that demands Democratic senators running for President filibuster unpassed spending bills until a withdrawal date is set for troops to leave Iraq.

"Americans elected a Democratic Congress in 2006 to end the war in Iraq. A blank check for billions in war funding moves us in the wrong direction," said Nita Chaudhary, Campaign Director on Iraq for MoveOn, according to reports from The Hill and Politico. "Majority Leader Reid and the Democratic leadership should hold the line they've drawn: no war funding without a timeline to end the war.”

MoveOn.org is targeting Sen. Joe Biden (D.-Del.), Sen. Hillary Clinton (D.-N.Y), Sen. Chris Dodd (D.-Conn.) and Sen. Barack Obama (D.-Ill.). MoveOn.org says they will be delivering their petitions to the Democratic senators’ Capitol Hill offices on Monday.

In September, MoveOn purchased a controversial advertisement that called U.S. Army Gen. David H. Petraeus “General Betray Us” that was reprimanded in a non-binding Senate resolution, 72-25. Clinton and Dodd did not condemn the MoveOn advertisement in their vote. Biden and Obama did not vote.

“The senators who are running for president have talked a lot about their leadership on Iraq — now is the time for them to show it by blocking this bad deal,” said MoveOn Executive Director Eli Pariser, as quoted in stories by the Hill and the Politico---indicating it likely came from a press release issued by MoveOn.

So far only one of the 12 annual “must-pass” spending bills have been passed by Congress, although the original deadline for passage was October 30. Democrats have proposed rolling the remaining bills into a single $522 billion “omnibus” bill.

Republicans complain that partisan-driven battles have already held up work on the spending bills.

President Bush has indicated he will veto a budget-busting omnibus spending bill or anything that contains a withdrawal date for U.S. troops to leave Iraq, which could further delay Congress if Democrats insist on an end date for war operations.