Democratic National Committee (DNC) Chairwoman Debbie Wasserman Schultz (Fla.) endorsed the compromise debt ceiling proposal on Sunday evening, becoming the first major House Democrat to do so.

Even while Minority Leader Nancy Pelosi (D-Calif.) reserved judgment on the deal forged by Senate leaders and blessed by President Obama, Wasserman Schultz, a Florida congresswoman, urged rank-and-file Democrats to get behind the plan.

"I urge my colleagues on both sides of the aisle to support this compromise and renew their commitment to working to together in a bipartisan fashion to move our country forward," Wasserman Schultz said in a statement.

The deal struck Sunday, which cuts up to $2.4 trillion from the budget in exchange for a two-stage increase in the nation's debt limit, received quick support from Obama and some party leaders on both sides of the aisle.

But the plan faces its most significant challenges in the House, with its more liberal Democratic flank and deeply conservative Republican flank each emerging in union against the deal.

To that end, Pelosi wouldn't immediately endorse the deal in comments Sunday night, having said that her caucus would have to meet first before rendering judgment.

"I have to meet with my caucus tomorrow to see how they wish to proceed," Pelosi said. "We all may not be able to support it, or none of us may be able to support it. But we'll wait and see."

Wasserman Schultz, of course, faces different obligations from Pelosi as head of the DNC. The Florida congresswoman is principally charged with working to boost the president's political standing, and that of the party's, going into next year's election.

But it would certainly create the perception of divisions among Democrats if Pelosi and other members of the House Democratic leadership were to ultimately come out in opposition to the deal.

Wasserman Schultz also made the argument for why the deal meets Democratic principles, especially amid frustration from liberals who feel that the administration and Senate Democrats caved to GOP demands over the course of the debt ceiling talks.

"The president and Democrats' primary focus has been to ensure that we meet our obligations and avoid default while beginning to get our fiscal house in order. This deal accomplishes that," she said. "It puts in place a framework for long-term fiscal discipline and it makes a down payment on deficit reduction. The agreement sets the stage for a balanced package that includes revenues."