President Barack Obama has dispatched a trio of heavy-hitting former Senators to the Senate to shore up votes for a health care reform bill that could come up later this week.

Senate Majority Leader Harry Reid (D-Nev.) accepted Obama’s offer of the firepower of Vice President Joseph Biden, Interior Secretary Ken Salazar and former Majority Leader Tom Daschle (D-S.D.), hoping the threesome will be able to help Reid convince all 60 Members of the Democratic Conference to vote down a filibuster of the motion to proceed to the health care measure.

All three power brokers were on the Hill on Wednesday, sources confirmed. And Reid met with Biden and Salazar on Wednesday morning. Biden had been Delaware’s senior Senator before he became Obama’s vice president; Salazar served as a Senator from Colorado for four years before taking his post in the administration.

Reid is set to brief Senate Democrats at 5 p.m. Wednesday on the contents of his proposed bill as well as a cost estimate provided by the Congressional Budget Office. Senators could vote as early as Friday or Saturday on the motion to proceed to begin debating the bill.