From NBC's Ken Strickland
In what appears to be the administration making a a last-minute push to curry votes for health care, Vice President Joe Biden is up there lobbying as is former Senate Majority Leader Tom Daschle.
Interior Secretary Ken Salazar, a former centrist U.S. Senator has also been spotted in the hallways, but he says he's just up there to see friends and that he's not really lobbying for health care.
But it's worth noting that Salazar is still friends with many of the key moderate senators whose votes will be crucial in defeating a potential Republican filibuster. Salazar said he was going to see his old friend Arkansas Sen. Mark Pryor (D), for one.
He certainly picked an odd day to go to the Hill just to hang out, especially since Majority Leader Harry Reid (D-NV) is hoping for a vote as early as Friday.
The presence of the triumverate of administration friends and officials who have lots of friends on the Hill and know the ways of the Senate, is likely a sign that Reid and the Democrats still clearly don't quite have everything they need to let the bill proceed.
As far as that CBO score, still no word. Sen. Maria Cantwell (D-WA) said she was told that members would know before the press. There is a Democratic caucus briefing later this afternoon at which Reid is expected to share the score.