Polls on the January 19 special Senate election in Massachusetts are showing hugely different results: the Boston Globe has Democrat Martha Coakley ahead 53%-36%, Rasmussen has Coakley ahead 50%-41% and PPP, as I noted Saturday, has Republican Scott Brown ahead 48%-47%. How to explain this? Pollster.com’s Mark Blumenthal has a characteristically first-rate analysis. His major point:

The big spread in results among the polls, and differences apparent within two of them, are all consistent in supporting one finding: The lower the turnout, the better the odds for Scott Brown. These differences indicate that the voters most interested and most likely to vote are Republican, while Democrats are more blase.