Traders assign virtually all probability to "Other" as the outcome for replacing Oklahoma Senator Markwayne Mullin, reflecting no credible developments signaling a Senate vacancy. Mullin, re-elected in 2022 with a term extending to 2028, continues active service, including recent committee work and public statements affirming his role, with zero reports of resignation or appointment to another position. Potential successors like Rep. Kevin Hern, House Speaker Charles McCall, AG Gentner Drummond, Lt. Gov. Matt Pinnell, or Rep. Stephanie Bice garner negligible odds absent a trigger event. Realistic challenges include a Trump administration nomination requiring resignation or unexpected personal departure, prompting Gov. Kevin Stitt's interim appointment ahead of a special election; however, no such catalysts have emerged.