Boston mayoral candidate Josh Kraft backtracked on his campaign promise to implement a rent control plan, saying that he envisions an “opt-in” program that would incentivize landlords to keep rent

Out Wu’ing Boston Mayor Michelle Wu. As he launched his campaign for the city’s top spot on Tuesday, the scion of one of the state’s wealthiest and most well-known families more or less promised to do all the stuff Wu promised to do during her first term.

After months of speculation and rumors, Josh Kraft officially announced his mayoral campaign Tuesday morning. Addressing a crowd inside Dorchester’s Prince Hall, Kraft outlined his personal history and vision for Boston, and previewed some ways in which he plans to attack Mayor Michelle Wu during the upcoming campaign.