No other Kennedy of his generation with the political stature to step into the role has signaled interest in it, according to Democratic insiders and people close to the family. And Victoria Reggie Kennedy, the senator’s widow, who many expected would be a likely candidate, so far has indicated she is not interested in succeeding her husband, those close her have said.

“Joe Kennedy, as emotionally drained as he must be, cannot help but be moved by the outpouring of affection and respect that has come from people all over the country in the last several days,’’ said Dan Payne, a longtime Democratic media consultant. “I’m not saying he is going to run, but he wouldn’t be human and he wouldn’t be a Kennedy if he didn’t give serious thought to running for the so-called Kennedy seat.’’

Payne said Kennedy’s decision to run would have a huge impact.

“His candidacy in a special election would force all other candidates – real or imagined – to think twice about whether they want to take on a Kennedy so close to Senator Kennedy’s death,’’ he said.