Kerrey said the flurry of endorsements only buttresses his message.
"The endorsements that I've gotten are from people who are not Democrats," Kerrey said. "It reinforces the promise I've been making all along, which is to cross party lines and to actually work with Republicans to solve problems."
Kerrey said his work on the 9/11 commission that investigated the Sept. 11 attacks is proof of his bipartisan record, because the Democrats on the commission were pressured to blame President George W. Bush, while the Republicans were pressured to blame President Bill Clinton.
"We did neither, and it had a big impact on making the country safer," Kerrey said.
Among other races before voters Tuesday, the most attention has been on the Omaha-focused 2nd Congressional District, where Democrat John Ewing is trying to unseat seven-term Republican incumbent Lee Terry. They've campaigned on the need to balance the federal budget, with both candidates arguing their past proves they're up to the task.
Democrats are challenging Nebraska's other two Republican congressmen, but incumbent U.S. Reps. Jeff Fortenberry and Adrian Smith are expected to win easily because their districts are overwhelmingly Republican.
Voters also will decide the winner of 26 seats in the 49-member Nebraska Legislature. Republicans are guaranteed at least 24 seats next year, so the party only needs to win one of the 12 Democrat-vs.-Republican races to maintain control.
Four ballot measures are being put to the voters. The proposals would, if passed, enshrine hunting and fishing in the state constitution, increase legislator pay, allow lawmakers to serve up to three terms and make it easier to impeach officials.
Funk contributed to this report from Omaha, Neb.