US Representative John Tierney

Warchest: $1.3 million

Chance of running: Appears likely. Said he would look at the seat. “You can’t avoid the discussion,” he said. “In your own mind you run through a lot.”

Pro: Just won a seventh term to Congress, and has a healthy amount of money available for a quick race.

Con: While well known on the North Shore, his statewide name recognition would not be as high as other candidates in the race.