Will the Republicans win the 2028 US Presidential Election?

Kalshi — primary rule

If a representative of the Republican party is inaugurated as President for the term beginning January 20, 2029, then the market resolves to Yes.

Polymarket — resolution criteria

The 2028 United States presidential election will be held on Tuesday, November 7, 2028. This market will resolve to the political party whose candidate is elected the next President of the United States in the 2028 election. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same party. If all three sources haven’t called the race for the same party by the inauguration date (January 20, 2029) this market will resolve based on who is inaugurated.