Healey, who was part of the team that brought marriage equality to Massachusetts, will be the state's top attorney.
No Republican had ever been tested at the polls in a reelection after having supported marriage equality.
Another former campaign worker has accused Carl DeMaio of sexual harassment. Meanwhile, DeMaio has blocked the reporter who broke the story from his Twitter feed.
New York's former City Council speaker Christine Quinn is using her experience as a lesbian and a woman in politics by leading a new party.