>>It’s actually less than 2 to 1 (37% to 21%). Indies are number one with 42%.<<
The numbers in 2008 were greater than 3:1, unfortunately, and I doubt that’s changed much. However, unenrolled (independents) outnumber even the Dems. If they break 3:1 for Brown as in Rasmussen’s recent poll, you get almost exactly an equal number of Brown voters versus Coakley voters (assuming all Dems vote Coakley and all Reps vote Brown)
What this will come down to is turnout, and turnout depends on energy. The energy in this race is definitely with Brown, so I think he’s got an excellent chance.