Midterm elections are typically a referendum on the party in power, creating a more beneficial environment for challengers to Republican incumbents in 2026. Dan Osborn is a well-established figure

Former labor union leader and independent candidate Dan Osborn has announced his bid for a Nebraska U.S. Senate seat, challenging Republican Sen. Pete Ricketts.

Independent populist Dan Osborn, whose insurgent Senate campaign seriously threatened one of Nebraska’s Republicans from securing a third term last year, is now taking on GOP Sen. Pete Ricketts — one of the wealthiest members of Congress.