"Basically he's not a rigid partisan and he's willing to look at anyone from any side of the aisle based on their ideas," he says.
Both sides are expected to be well-funded, as reliable liberal vote Markey commands deep ties to the Democratic Party both locally and nationally, and the wealthy Gomez was willing to spend about $600,000 during his primary campaign.
"When it comes to fundraising, he is going to make sure and our campaign is going to make sure that we have the amount of money that it's going to take to get our message of reforming Washington out there and go up against the Democratic machine," Ritter says.
While no polling is available on the match-up yet, Massachusetts voters – about 50 percent of whom call themselves independents – have shown a willingness to vote for moderate Republicans in off-year elections when the overall turnout is lower. The key will be which side is faster at defining their candidate and painting the opponent as just an arm of their respective national party.