Both the House and the Senate plan to vote Monday night on a deal to raise the debt ceiling, although officials said that the scheduling remained uncertain as party leaders scrambled to ensure they had enough votes.

Senate Majority Leader Harry Reid, D-Nev., told reporters that he "expects to vote hopefully during today's session sometime." Opponents of the bill are expected to filibuster, but will likely not sustain a filibuster long enough to delay the debt limit being raised tonight, Roll Call reported.

Similarly, a GOP leadership aide told The Hill that the House would likely hold a vote before the Senate "hopefully tonight," although he cautioned that the timetable for a vote remained "very fluid."

The White House dispatched Vice President Joe Biden to mollify Democrats who are angry that the plan capitulates to Republican demands for no new revenues, and House Speaker John Boehner, R-Ohio, will once again be briefing House Republicans on the outlines of the deal.

The Congressional Budget Office released a cost estimate projecting that the deal would save at least $2.1 trillion over ten years, hitting a target set in negotiations.