WASHINGTON — If ever there was a time for a Senate filibuster, MoveOn.org says, this would be it.

Today the liberal anti-war group plans to deliver petitions signed by more than 15,000 vets and families to the offices of the Democratic senators running for president (Biden, Clinton, Dodd, Obama) urging them to block any Senate vote to fund the Iraq war without conditions for withdrawal.

Democrats are reportedly negotiating a deal with the White House to give President Bush as much as $70 billion in supplemental war funds he has requested in exchange for his promise not to veto domestic spending bills, according to a weekend report in the Washington Post.

“Americans elected a Democratic Congress in 2006 to end the war in Iraq,” said Nita Chaudhary, Campaign Director on Iraq for MoveOn, in a statement. “Majority Leader Reid and the Democratic leadership should hold the line they’ve drawn: no war funding without a timeline to end the war.”