Senator Elizabeth Warren has endorsed Abdul El-Sayed in the Democratic primary for Michigan's US Senate seat, breaking with fellow party leader Chuck Schumer and exposing a widening rift within the Democratic Party over its future direction. The split highlights an escalating internal battle between the party's establishment and progressive wings ahead of a race widely seen as pivotal to Democrats' hopes of winning back the Senate.

El-Sayed, who has been backed by figures such as Bernie Sanders, has told supporters that ICE, health insurers and corporate interests should regard him as "dangerous," framing his candidacy around anti-establishment and economic populist themes. Sanders has also dismissed rival candidate Haley Stevens, casting the contest as a fight against the "billionaire class," underscoring how the Michigan race has become a proxy battle for the ideological direction of the Democratic Party.