And PPP has the same poll that has Brown leading by 20. As far as the Whitehouse comparison, Chafee was tea partied by Laffey and was hurt in the primary there is no such tea party challenge.
Chafee was beat by being tied to national Republicans and control of the Senate being at stake in that election.
I don't see why that message wouldn't work in MA as well.
If I remember correctly though, Chafee's approvals were in the positives but not that great around 51-45 or so.
Also unlike Brown Chafee was known for doing nothing, little ideological difference between him and his opponent. Not to mention 2006 was a very bad year for Republicans and Chafee had an R next to his name. 2012 is unlikely to be that bad of a year for the GOP.