That's Nancy Pelosi walking up the steps of the Capitol building, carrying the same gavel used when Congress passed Medicare in 1965. The rule debate is beginning now. Twitter users can follow along here. Or watch streaming video of the debate via C-Span. Huff Po:

At Pelosi's side were Georgia congressman and civil rights-era leader John Lewis and her close friend Rep. David Obey (D-Wisc.).

Speaking to HuffPost's Arthur Delaney, Rep. Dingell expressed confidence that reform would pass when asked if he thought Democrats had the votes.

"I wouldn't be walking this way if I didn't," said the Michigan Democrat, who ambled into the meeting on crutches instead of in a wheelchair. The caucus could be heard applauding him when he entered the room.

Rep. Alan Grayson (D-Fla.) told HuffPost that Rep. Bart Stupak (D-Mich.) and his anti-abortion bloc of Democrats were not discussed during a last-minute morning meeting of Democrats. He echoed Speaker Pelosi in saying he expected the bill would pass. Asked whether Stupak would be a 'yes' vote, Rep. Sandy Levin said, "I think so."

Final vote on the Senate bill: 219-212