Bernie Sanders has concentrated his 2026 endorsements on progressive challengers and incumbents aligned with his priorities on economic inequality, healthcare expansion, and corporate accountability, particularly in Senate races. Recent primary successes by his backed candidates in Michigan and Minnesota have reinforced trader views that he favors strong grassroots progressives over establishment figures. As of mid-September, James Talarico in the Texas Senate race leads the market at roughly 30% implied probability, followed by Dan Osborn in Nebraska at 21%, reflecting ongoing uncertainty over which remaining competitive contest Sanders will next target before the November general election. His pattern of selective, late-cycle support and statements prioritizing working-class candidates continue to shape the distribution of probabilities across listed options.