Don't bet on a three-way race, Deval
I side with Wayne Woodlief over Howie Carr on the question of whether a independent gubernatorial campaign by Tim Cahill helps or hurts incumbent Deval Patrick in next year's general election. If Cahill finishes third but gets a substantial number of votes, Patrick is probably toast.
It seems logical that multiple candidates can split up the anti-incumbent vote and allow an unpopular pol to stay in office, but that hasn't been the case at the national level. The strongest third-party presidential candidates of the past 50 years were all involved in elections that threw out the incumbent party. In 1968, George Wallace got 14 percent and the Democrats lost; in 1980, John Anderson got 7 percent and Jimmy Carter was unseated; and in 1992, Ross Perot polled 18 percent and George H.W. Bush was evicted. We haven't had many strong third-party candidates for governor in Massachusetts, but the last one (Christy Mihos in 2006) obviously hurt the GOP's attempt to hold onto the office.
My hunch is that third candidates run strongest among voters who lean toward the party in power: They're disappointed or underwhelmed with their party's candidate, but they're not willing to cross party lines. They don't necessarily like "throwing their vote away," but they don't agonize about it. As it happens, they have a general dislike for one major party but also dislike the individual in charge of the other party.






