Massachusetts reader David offers these anecdotes:

You listed some sporting events – but you left out the most recent, Scott was shaking hands in the freezing cold outside of Gillette Stadium for the Ravens-Pats game. And it was seriously cold out there. While there, he got the endorsement of some former Pats. On the ever-packed Route 1 heading to and from the stadium, there were more Brown signs than Coakley signs (though no sign holders).
Driving around this morning – definitely more Brown yard signs. In downtown Bedford, for the morning commute, there was one Coakley sign holder out there in the cold. Typically, you’d see 10. So the cold might not just affect election day turnout, it is likely also impacting the lead up to the 19th (not to mention a likely lack of enthusiasm for their candidate).
That Scott is picking up the endorsements of local papers like the Lowell Sun is important. These papers don’t necessarily lean one way, and they are read.

Right now, I suspect one of the biggest factors in the Senate race might be weather. It’s . . . wicked cold in Massachusetts, could be for weeks, and snow showers are forecast for Election Day, with a high of 35 degrees. On a miserable day like that, who knows what condition the roads are in, you have to really want to go out and vote.