Will Marco Rubio win the 2028 Republican presidential nomination?

Kalshi — primary rule

If Marco Rubio wins and accepts the nomination for the Presidency for the Republican party in 2028, then the market resolves to Yes.

Polymarket — resolution criteria

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.