The poll finds Brown making more inroads among Democrats than Warren does among Republicans. In a state where Democrats outnumber Republicans three to one, it’s important for Brown to pull away a significant number of Democrats from Warren, and 15 percent of Democrats say they would vote for him.

Brown also has a 14-point lead among independent voters, like Peter Noonan, of Hull. He’s been working on the ferry Massachusetts for the last seven years.

“I’m an independent,” Noonan said. “I come from a solid Democratic family. I come from a blue-collar, vote-Democrat-ticket strictly [family], but the way things have changed politically in the last 20, 25 years, you really can’t vote a party line. I really believe you have to see which candidate is the best, and go with that.”