While it would probably be a bad idea to infer too much from crosstabs of 33 and 27 people, respectively, the poll has Baker up 65-28 in the North Shore (MA-6), but down 40-49 in the Cape & Islands and South Coast (MA-9). Probably R and D-biased samples, respectively, but if they're anywhere near true it means Tisei has a great chance but Keating is safe.
The DCCC pulled out of MA-06 since they figured they had it locked up. The poll there that showed Tisei ahead by 3 also gave Obama a literally impossible 28-63 favorability rating in a D+4 district, so I'm skeptical about that. The dynamics of the Mass race makes it seem unlikely that Baker would have any coattails.