Republican Senate candidate Ben Sasse entered April with more than $1 million in campaign cash on hand after raising more than $850,000 during the first quarter of the year.
"We have the momentum," Sasse campaign manager Tyler Grassmeyer said in releasing the campaign finance totals.
"Ben's message of repealing Obamacare and recovering the Constitution is resonating with Nebraskans and that's where our support comes from," he said.
GOP Senate candidate Shane Osborn's campaign reported the former state treasurer raised an adjusted $610,000 during the first quarter of the year and had $762,000 in cash on hand.
Osborn is "raising the resources necessary to communicate his proven conservative message throughout the state in the final weeks of the primary campaign," the Osborn campaign stated in a news release.
"The support of hard-working Nebraska families will make the difference in this race and they will stand with the candidate who has stood with them and fought for their beliefs," Osborn said.
Sasse and Osborn are locked in a four-candidate race with Omaha banker Sid Dinsdale and Omaha attorney Bart McLeay.
Cash-on-hand figures often are difficult to evaluate because some funds raised by candidates come from contributors who have reached the maximum primary election figure and any excess may be used only in a general election campaign.