Result is 48-43 without leaners, 50-44 with leaners.
http://www.wbur.org/...
The pollster describes this as a "meaningful change" from their prior poll in early October (which RCP is still clinging to), which put Brown up by 4 without leaners and 3 with leaners, for a 9(!) point swing to Warren. Though this is a pretty big swing, the topline is consistent with the same pollsters' September polls, and identical to the recent PPP poll that also put Warren up 50-44.
The pollster focuses on the third debate as a possible cause, but of course Brown has had some other problems in the past couple weeks.
Here's the prior poll:
http://www.wbur.org/...