Incumbent Republican Tom Cole faces Democrat Mitchell Jacob and Independent Rocco Bonacci in Oklahoma's 4th district on November 3, 2026. The district's R+17 Partisan Voter Index and consistent double-digit Republican margins in recent cycles underpin trader expectations for a 20-30 point GOP victory. Cole secured renomination comfortably in the June primary and maintains a substantial fundraising edge, while ratings from Cook, Sabato's Crystal Ball, and Inside Elections classify the seat as safe or solid Republican. Limited Democratic resources and the absence of major campaign developments or national shifts in the final weeks have kept probabilities concentrated on comfortable Republican margins rather than a closer contest or Democratic upset. Turnout patterns or late external events could still adjust the final spread.