A stunning political defection has upended Michigan’s high-stakes Senate race, as a Democratic congresswoman publicly backed the Republican nominee over her own party’s candidate, sparking sharp backlash from fellow Democrats. The endorsement—unprecedented in a closely watched election—has injected fresh volatility into one of the most fiercely contested Senate battles in the country. Party leaders and activists have condemned the move, framing it as a betrayal that could reshape the campaign’s trajectory. With tensions flaring, the fallout may now determine whether the race remains competitive or descends into deeper division ahead of Election Day.


Chaos in Michigan is raising the stakes even higher in one of the most closely watched Senate battles in the nation. The political world was agog on Sunday when Rep. Haley Stevens (D-Mich.) endorsed the GOP’s Senate candidate, former Rep. Mike Rogers (R-Mich.), over her party colleague Abdul El-Sayed. Democrats immediately and fiercely denounced Stevens,...