The Democratic Socialists of America (DSA) has escalated its internal conflict with the Democratic Party establishment by endorsing a primary challenger to a sitting progressive congressman. The organisation confirmed it is backing Donavan McKinney, a Michigan state lawmaker, in his bid to unseat Rep. Shri Thanedar in the state's Democratic primary, deepening rifts on the American left between the DSA and mainstream Democrats.

The move reflects a wider pattern of the DSA and its allies working to unseat Democratic incumbents they view as insufficiently progressive, contributing to broader turmoil within the party. The endorsement was confirmed to Fox News Digital on a Monday, and comes amid a string of other flashpoints between the party's establishment and its far-left flank, including disputes over Senate primaries in Maine and clashes involving figures such as New York Mayor Zohran Mamdani.