The Wyoming U.S. Senate Primary Election on August 15, 2028, will determine the Democratic and Republican nominees for Wyoming's Class I U.S. Senate seat. The winner of each party's primary will advance to the general election to compete for the six-year term in the U.S. Senate, currently held by Senator John Barrasso, who is not up for election in 2028; this seat is held by Senator Cynthia Lummis, who is seeking re-election.
The Wyoming U.S. Senate Primary Election on August 15, 2028, will determine the Democratic and Republican nominees for Wyoming's Class I U.S. Senate seat. The winner of each party's primary will advance to the general election to compete for the six-year term in the U.S. Senate, currently held by Senator John Barrasso, who is not up for election in 2028; this seat is held by Senator Cynthia Lummis, who is seeking re-election.
To vote in Wyoming's 2028 primary election, voters must be registered by July 15, 2028. Registration can be completed online via the Wyoming Secretary of State's website, by mail, or in person at a county clerk's office. On election day or during early voting, voters must present a valid photo ID such as a Wyoming driver's license, state ID, or U.S. passport. Early voting begins July 27 and runs through August 13, 2028, at designated county polling places or the county clerk's office.