Sen. Elizabeth Warren has another challenger. Ian Cain, president of the Quincy City Council, officially kicked off his campaign to unseat the popular progressive Wednesday. Running as a Republican, Cain will first have to square off with John Deaton in what could be a tight primary race before potentially taking on Warren.

The first Black and openly gay City Council president in Quincy’s history, Cain, 41, is making a generational pitch in his long-shot candidacy against Warren, who is 30 years his senior.

Ian Cain on Wednesday formally launched his campaign. He’s the second Republican to take on incumbent Democratic U.S. Sen. Elizabeth Warren as she runs for her third term.