A group of Senate Democratic centrists is scheduled to meet with President Barack Obama at the White House on Thursday on the heels of his Wednesday evening address to a joint session of Congress, a Senate Democratic aide confirmed.

Exactly which Democratic centrists that will attend remains fluid. But the group is likely to include Sens. Evan Bayh (Ind.), Tom Carper (Del.) and Blanche Lincoln (Ark.). A major obstacle to Obama’s goal of passing health care reform this year has been the resistance of Democratic moderates.

One Democratic moderate, Sen. Mary Landrieu (La.), signaled following Obama’s speech that the president still has much work to do to unify the centrists and liberals within his party. However, she did compliment his speech as a step in the right direction.

“It wasn’t a magic bullet,— Landrieu said of the speech. “But I think it was a very sincere, well-constructed, thoughtful approach.—

“I do not think this speech healed,— she continued. “But I think what this speech did is not just reach out to try to find common ground among Democrats, which is important. But as important is to find common ground with Republican proposals.—