With a new poll showing Rep. Edward J. Markey, D-Mass., pulling away, yet another outside group spot is hitting GOP nominee Gabriel Gomez in the Massachusetts Senate special election.

The new Senate Majority PAC advertisement, released on Monday, ties Gomez to Mitt Romney, the former Bay State governor and presidential nominee whose business background was tarnished in early 2012 ads. The ad is part of a $1 million media buy from the group, contributing to the overwhelming spending advantage Markey and his Democratic allies enjoy in this race.

youtube.com/watch?v=3MyYgAp96mU

Democrats have been on a quest to paint Gomez as just another Republican who looks out for business ahead of the middle class.

It may be working, as a Boston Globe poll released on Sunday found Markey out to an 11-point lead.

There is just one week of campaigning left in the June 25 election to fill the remaining term of John Kerry, who resigned to become secretary of State.

(See also in Roll Call: Markey Outspends Gomez by $4 million)