Former local public health official Abdul El-Sayed has won a high-profile Democratic primary for Michigan’s open Senate seat, advancing to a general election that will test whether a progressive Democrat can win statewide in a key Midwestern battleground. Senate Democratic hopes of flipping the chamber likely rest on them retaining this seat, which Sen. Gary Peters is vacating after two terms. But it was the Senate primary that drew the lion’s share of national attention. The intense and expensive race pitted the Democratic establishment against its progressive wing and drew more than $80 million in spending. El-Sayed, a progressive backed by Sen. Bernie Sanders and Rep. Alexandria Ocasio-Cortez, criticized Stevens, who had endorsements from Gov.