Momentum swinging back to Obama?

Rasmussen poll seems to indicate he's starting to retake control of the race:

On Monday, the Rasmussen Reports daily Presidential Tracking Poll shows—for the first time in a week--Barack Obama with a slight advantage over Hillary Clinton in the race for the Democratic Presidential Nomination. It’s Obama 46% Clinton 44%. Yesterday, Clinton was up by two points (see recent daily results). Clinton is viewed favorably by 73% of Likely Democratic Primary Voters. However, that figure includes just 55% of Obama voters. Obama is viewed favorably by 69% of Likely Democratic Primary Voters, a figure that includes 43% of Clinton supporters.