Dan Osborn’s campaign has experienced a string of senior staff departures in recent months, an unusual level of turnover for a Senate campaign heading into the final stretch before Election Day.

Osborn, a union leader who ran as an independent and lost to Republican Sen. Deb Fischer in 2024, is seeking another Senate seat in Nebraska against incumbent Sen. Pete Ricketts. His campaign has faced a series of personnel changes and damaging disclosures as Republicans work to defend their narrow Senate majority.

James Dolan, Osborn’s campaign manager, left in May to manage the campaign of Rachel Wallace, a long-shot Democratic challenger to Rep. Dan Meuser in Pennsylvania. In July, communications director Colleen Craig departed after a recording surfaced in which she claimed Osborn had recruited Graham Platner to run for Senate in Maine. Osborn’s team denied Craig’s claims and said she was no longer employed by the campaign.

Nick Swain, who led the campaign’s weekly data calls, also left to manage another congressional campaign. Will Ramsey, a longtime staffer who worked on Osborn’s 2024 campaign, recently departed to pursue other opportunities after completing his college degree.

Ramsey also came under scrutiny after an investigation by the Flatwater Free Press found that he had attempted to infiltrate and disband a third party in Nebraska to clear the way for Osborn’s candidacy.

Meanwhile, finance director Caroline Lowe was promoted to deputy campaign manager, and the campaign posted a job opening for a new finance director in August.

Osborn’s operation has also parted ways with progressive consultants Daniel Moraff and Morris Katz, both of whom worked on his 2024 campaign and later played significant roles in Platner’s unsuccessful Senate bid.

Osborn said Moraff left in June to focus on other races, describing him as a “minor consultant” who had “just kind of outwore his worth to me.” Osborn also said he would not hire Katz for his campaign again.

Despite the turnover, campaign manager Camilo Vilaseca said Osborn remains focused on representing working people across Nebraska and claimed the race against Ricketts is tied.

“Dan Osborn is tied with Pete Ricketts, and we’ve got the team to beat him,” Vilaseca said.

The departures come as Osborn attempts to build on the populist appeal that attracted Democratic support during his previous Senate campaign. The latest staffing changes, however, add another challenge as he faces an incumbent Republican and prepares for the November contest.