All but the nominee resolve NA.

The nominee resolves YES if he/she wins the overall election and NO if someone else wins.

First nomination counts. If Trump gets nominated everybody else is NA. If Trump later withdraws, he resolves NO. Followup does not matter.

Arbitrate with /ahalekelly/if-donald-trump-is-the-2024-nominee

There is also /marketwise/will-a-democrat-win-the-2024-electi-d213115a0434

Close date might be extended if election results take longer.