Warren defies Schumer as Dem civil war explodes over must-win Senate race

There’s a battle to shape the Democratic Party this fall, and two top Senate Democrats are taking different paths in their bids to put their mark on the process.

Sen. Elizabeth Warren, D-Mass., endorsed Abdul El-Sayed in the duel for the Democratic Senate nomination in Michigan. It’s a break from Senate Minority Leader Chuck Schumer, D-N.Y., who is backing Rep. Haley Stevens, D-Mich.

The diverging endorsements are emblematic of the fight going on behind the scenes and publicly in the...