The Berkshires are blue for two reasons.
1) That is the area where Coakley was from.
2) That’s a liberal corridor, sort of a southern extension of Vermont, attracting the same mix of granola-eating former New Yorkers, Bostonians, etc.
3) There are more cows than people out in Western Massachusetts, so it didn’t affect the total very much.
Two reasons and a third observation.
Thanks. That’s why FR is great. I get more information here from people who know and live there than anyplace else.