Wyoming’s Republican primary for the at-large U.S. House seat on August 18 features a crowded field of more than a dozen candidates, keeping implied probabilities tightly clustered. Secretary of State Chuck Gray holds a modest edge in trader consensus, but self-funding by Steve Friess and Reid Rasner, along with Bo Biteman’s statewide profile, has fueled competitive name recognition and mail efforts. Forums in Casper and elsewhere have highlighted shared priorities on election integrity, energy policy, and public lands without producing clear separation. With only days remaining, last-minute endorsements, turnout among rural and energy-producing counties, and any late attacks could shift support among the fragmented vote before the primary decides the nominee.