Washington (CNN) - A liberal group that last week said the White House has a "loser mentality" is continuing to round up support for using the parliamentary maneuver called reconciliation to pass a health care public option.
"Robert Gibbs had a loser mentality when he said 50 votes don't exist in the Senate for the public option when well over 50 existed before," Progressive Change Campaign Committee co-founder Adam Green told CNN. "We're going to prove him wrong."
The PCCC has added five senators to its list of those who have expressed support for using reconciliation - which requires a simple 51-vote majority in the Senate - to pass a public option. The number of senators who support the cause now totals 30.
Senate Majority Whip Dick Durbin's office is among the five senators to submit a statement to the PCCC this weekend.
"Sen. Durbin has long been a supporter of the public option," Communications Director Joe Shoemaker told the PCCC. "I don't know whether the votes exist in the Senate right now, but if the House version of the public option came up for a vote in reconciliation Sen. Durbin would vote yes."
Sens. Patty Murray, Jeff Bingaman, Ben Cardin and Amy Klobuchar sent similar letters of support.