The most prominent battle occurred in Michigan’s Democratic U.S. Senate primary, where former public health official Abdul El-Sayed defeated four-term Representative Haley Stevens in a high-stakes clash between the party’s progressive wing and establishment center. El-Sayed — endorsed by Senator Bernie Sanders and Representative Alexandria Ocasio-Cortez — campaigned on “Medicare for All,” systemic campaign finance reform, and a halt to U.S. military aid to Israel.