The former president also called Haley an “imposter” during his victory speech and threatened to “get even.”
Trump’s references to Nevada are due to an odd quirk in the process this year: The state is holding both a caucus ― where its delegates will be awarded ― and a primary, where no delegates will be at stake.
Both events will be in February.
Haley is competing only in the primary, while Trump is competing only in the caucus, leading to his victory declaration.
The split contest has generated plenty of controversy, with former state party chair Amy Tarkanian last year calling it “a nightmare” and “a debacle.”
The two won’t face each other directly on the ballot again until the South Carolina primary on Feb. 24.