Rep. Ro Khanna (D-Calif.) is endorsing a trio of insurgent Democratic candidates who are challenging his fellow California House Democrats, Axios has learned.

Why it matters: This is an aggressive move by a potential 2028 presidential contender who styles himself as one of the few Democrats willing to get into direct confrontations with the party establishment.

He has backed members of the progressive "Bloc" who have refused to commit to voting for Minority Leader Hakeem Jeffries (D-N.Y.) as speaker.

This is territory where even other high-profile House progressives — including Rep. Alexandria Ocasio-Cortez (D-N.Y.), another potential 2028er — have largely refused to tread.

Driving the news: "Today I'm endorsing three new generation leaders Angela Gonzales-Torres, Eric Jones, and Mai Vang," Khanna said in a statement first shared with Axios.

Gonzales-Torres, a former local elected official challenging Rep.…