Incumbent Republican Pete Sessions faces Democrat Casey Shepard in Texas’s 17th congressional district on November 3, 2026, after both secured their party nominations earlier this year. The district’s Republican lean, reinforced by 2024 presidential results and mid-decade redistricting that strengthened GOP advantages in the area anchored around Waco, supports trader expectations for a Sessions victory by double-digit margins. Forecasters rate the seat Solid or Safe Republican, reflecting Sessions’ long tenure and unopposed primary alongside Shepard’s limited statewide profile following her May runoff win. Current market pricing centers on Republican margins of 10-20 points as the most probable outcomes, consistent with historical performance in the district and the absence of recent polling shifts or national developments that would narrow the gap. A late surge in Democratic turnout or unforeseen candidate-specific events remain the primary variables that could compress the margin below 10 points.