The primary ballot is set for Iowa's first open U.S. Senate seat in a dozen years. Meet the candidates running to replace Joni Ernst.

Anti-ICE messaging is expected to be featured prominently in Michigan's hotly contested U.S. Senate Democratic primary.

In the days after winning the Democratic nomination for Senate, Illinois Lt. Gov. Juliana Stratton spoke to the two women with whom she could make history next year.

Maine Gov. Janet Mills, running against oyster farmer and former Marine Graham Platner in the November Democratic Senate primary, says “it’s important Maine voters hear Platner’s own words and the absolutely

Illinois Lt. Gov. Juliana Stratton is projected to win the heated and crowded Democratic primary race for the U.S. Senate seat that Dick Durbin has held for nearly 30 years, according to CBS News analysis.

Energy executive Alan Armstrong emerges as the leading pick as political dynamics, including Donald Trump’s influence, shape the rollout. Journalist Reese Gorman joins Scott Mitchell to explain how Armstrong got the appointment and what's next.

Alabama's 2026 US Senate race is underway. Here are the 10 candidates running and when election dates are in Alabama.

Why do Bill Cassidy and John Fleming want to meet on TV, why is Julia Letlow resisting? Columnist Stephanie Grace explains why once-routine debates are up for debate in this year’s U.S. Senate race.