Tom Sell holds a dominant position in the Texas 19th Congressional District Republican primary runoff due to his leading 40 percent share in the March 3 primary and rapid consolidation of support afterward. Multiple eliminated candidates have endorsed him, bolstering his campaign alongside superior fundraising and deep local ties as a fifth-generation West Texan with agriculture policy experience. Traders reflect this momentum through overwhelming consensus on Sell ahead of the May 26 runoff, where early voting begins May 18. While Abraham Enriquez maintains a narrower base, late developments such as turnout shifts among rural voters or unexpected endorsements could still influence the final outcome before resolution.