Recent Republican midterm losses, including Democratic gains in Congress amid the Iran conflict and economic pressures, have heightened uncertainty in the 2028 nomination race and kept top probabilities closely matched. Trader consensus places Robert F. Kennedy Jr. narrowly ahead of J.D. Vance, with Marco Rubio and Ron DeSantis also active, as participants weigh post-election positioning by administration figures and potential challengers. Vance has sought to differentiate on domestic priorities while others highlight alternative paths forward. Upcoming developments such as primary filing deadlines, candidate announcements, and shifts in polling among Republican voters could create separation by clarifying coalition support and viability.
This market will resolve to “Yes” if the named individual wins and accepts the 2028 nomination of the Republican Party for U.S. president. Otherwise, this market will resolve to “No”. The resolution source for this market will be a consensus of official Republican Party sources. Any replacement of the Republican nominee before election day will not change the resolution of the market.