Corey Stewart. He obviously had no chance regardless, but his campaign was a hot mess that seemed to be doing its best to make his loss margin as high as possible and seemed to think he was running in West Virginia. Come to think of it, he might've actually done better than Morrisey if he did, lol.
Honorable mentions to Bill Nelson, Debbie Stabenow, Jim Renacci, and Lou Barletta who sleepwalked through the campaign, Dean Heller and Leah Vukmir who seemed to think they were running in Oklahoma (must've read too many Atlas posts/pundit columns about their respective states), Heidi Heitkamp who literally leaked the names of sexual assault victims right before the election and seemed to think she was running in Vermont, and Patrick Morrisey and Leah Vukmir for just being awful and unlikable in general.
lol no, WV was literally created in opposition to the confederacy. More like Corey Stewart thought he was running in Alabama .