Blogger Steve Kornacki is reporting that Martha Coakley's internal polling has Brown leading by 3%, 47%-44%.
The last time a public poll showed a Republican leading a Massachusetts Senate race this close to the election was, well....never. There were no public polls released in the week leading up to the 1972 election, the last one won by a Republican (Ed Brooke, was re-elected in a landslide over John Droney). And since then, Democrats have enjoyed the stretch-run advantage in every Senate race in the state. The closest the GOP came was in 1996, when Bill Weld was within a few points of John Kerry just before Election Day; Weld lost that race by seven points.