He was the Republican nominee for the 2006 U.S. Senate race in Nebraska,[2] which he lost to then incumbent Ben Nelson. He ran for Governor of Nebraska in the 2014 election, this time defeating the Democratic nominee, Chuck Hassebrook. He was inaugurated as Governor in January 2015.
In January 2023, Governor Jim Pillen picked Ricketts to the U.S. Senate to fill the vacancy left by the resignation of Ben Sasse.[3]