A UW expert says a number of factors led to Tuesdayâ??s stunning election results in Massachusetts. How did Republican Scott Brown pull off his big upset in the Massachusetts Senate race? â??It is a very blue state, especially for presidential voting, but while Democrats outnumber Republicans by three to one, Independents outnumber both of them, and so there was a big group of unaffiliated voters.â? said UW political scientist Charles Franklin. â??The other thing that happened is turnout.â?