The former president's son also unleashed expletive-laced attacks targeting actor George Clooney, Democratic strategists James Carville and David Axelrod, and other prominent Democrats who publicly called for Biden to drop out of the race after the debate.

Hunter Biden suddenly has a lot to say.

Markey called Charbonnier “the best person to lead this grassroots campaign of big issues, forward-looking ideas and Massachusetts values.”