WASHINGTON (AP) — Maryland Sen. Chris Van Hollen is backing progressive Abdul El-Sayed in Michigan’s Democratic Senate primary, breaking with party leadership and intensifying a battle over the party’s direction in one of the most important Senate races of 2026.Van Hollen’s endorsement, shared first with The Associated Press on the day early voting begins in Michigan, makes him the first senator to back El-Sayed since Sen. Bernie Sanders endorsed him shortly after he launched his campaign last year. It also comes on the heels of big wins for progressive challengers in New York U.S. House races on Tuesday.The Michigan race has increasingly split Democrats along ideological lines, with Senate Democratic Leader Chuck Schumer backing U.S. Rep. Haley Stevens and state Sen. Mallory McMorrow drawing support from other prominent senators.

Democrats will need to hold the Michigan seat if they want a shot at winning the majority this year. It opened by Democratic Sen. Gary Peters’ retirement and former Rep. Mike Rogers has an uncontested path to the Republican nomination.In an interview with the AP, Van Hollen said he believed El-Sayed was the “strongest” candidate who can win in November, and “the candidate who’s willing to take on the status quo.”“When I say the status quo, I mean not just the lawless Trump administration, but take on the Democratic establishment that has not fought hard enough for working people,” said Van Hollen.