Per Tom Jensen at Public Policy Polling:
PPP's newest Massachusetts poll finds Elizabeth Warren leading Scott Brown 46-41.
Brown is not proving to be an overwhelmingly popular Senator. 45% of voters approve of the job he's doing to 42% who disapprove. That's actually up a little bit from a 44/45 spread on our last poll in September. Republicans love him, giving him an 80/7 approval spread. But his appeal to Democrats and independents is not what it once was. At the end of his first year in office Brown was nearly running even with Democrats, with 35% approving of him to 41% who disapproved. Now he's at 23/63 across party lines. And although he remains popular with independents at 53/34, it's not the 61/25 rating he enjoyed with them at the end of 2010.
In the head to head with Warren, Brown has the GOP base completely locked up 89-3. And the 17% of Democrats he's winning is comparable to the 19% we found him getting against Martha Coakley in 2010. But he's only up 48-36 with independents, a far cry from his 64-32 advantage with them against Coakley, and that's the main reason he trails by this narrow margin.
Full results
here