Haven't been following this closely. Is there a reason Kennedy passed on running? I would've guessed he'd be all over this.
Perhaps he's worried about losing goodwill within the state party. His primary run against Markey backfired, and Healey is one of the top Democrats in the state so he wouldn't want to burn that bridge. Joe's run against Markey going down in flames indicates that the Kennedys aren't the stars they once were in terms of Massachusetts politics, and that MA voters don't flock to them as they did in the past.