(CNN) - CNN's Ted Barrett reports that on the Senate floor just minutes ago, Massachusetts Sen. Ted Kennedy, who has endorsed Sen. Barack Obama, approached Sen. Hillary Clinton during the vote on the economic stimulus package. He shook her hand and said something that caused her to laugh loudly - it seemed to be about her success in Massachusetts last night. Obama, standing two feet away talking to Sen. Tim Johnson, turned.
After a few more comments that couldn't be overheard from the press gallery directly above them, Clinton laughed again and said to Obama. "I had a big sigh of relief when he [Kennedy] endorsed you." Everyone laughed, a little awkwardly. Sen. John Kerry, who has also endorsed Obama, took the Illinois senator by the elbow and walked away with him.