“There’s still been no explanation for a multi-trillion dollar hole in this plan,” Buttigieg, the mayor of South Bend, Ind., said on CNN on Wednesday. “I have a lot of respect for Senator Warren, but last night she was more specific and forthcoming about the number of selfies she’s taken than about how this plan is going to be funded.”

During the debate, Klobuchar and Beto O’Rourke, the former congressman from Texas, all but accused Warren of engaging in class warfare, while Klobuchar offered a “reality check” on her proposals.

“The difference between a plan and a pipe dream is something that you can actually get done,” Klobuchar, the Minnesota senator, said.

Paul Maslin, a top Democratic pollster, said Buttigieg and Klobuchar “finally got to the place where they can best articulate, ‘We don’t have to go to the extreme.’ … Having said that, I think Bernie [Sanders] and Warren were both pretty effective in the way they countered it.”