Ann Wagner holds a commanding 98.1% implied probability in the MO-02 Republican primary market due to her status as seven-term incumbent in a solidly Republican district, combined with substantial fundraising advantages exceeding $3.5 million against far smaller totals from challengers. Recent filings confirm a fragmented field including Ryan Sheridan, Peter Pfeifer, Brandon Wilkinson, Elizabeth Sparks-Holmes, and Matthew Grant ahead of the August 4, 2026 primary, with no polling or endorsements indicating meaningful erosion of her support. Trader consensus reflects these structural factors, including historical primary margins above 60% and limited campaign activity from opponents. Scenarios that could still alter the outcome include an unexpected late surge in turnout or coordinated opposition, though none have materialized in the final weeks.