According to the Boston Herald

Citizen Elizabeth Warren has opened up a seven point lead over Former State Senator Scott Brown, 49% to 42%.
Yipes bad news for Team Brown given that the general election is almost eleven months away.
But therein lies my admonition for the day, the election is eleven months away, the democratic primary isn't until September 2012 and a lot will happen between now and then.  Moreover, forty nine percent is a plurality not a majority, those numbers are bound to change once the media scrutiny heats up....Hell Joanie Vennochi has not yet begun to cast a pox on both their houses yet.
The most important thing to remember is that seven point deficit potentially puts Brown in UnderDog Status, which is his preferred position, an UnderDog with a seven million dollar warchest all shaken down from the elite of Wall Street.