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WASHINGTON (CBSMiami/AP) — Donald Trump is blaming a “corrupt” election system for complicating his path to the Republican nomination.

The GOP front-runner told a crowd of thousands of enthusiastic supporters gathered in a frigid airport hangar in Rochester, New York on Sunday afternoon that “it’s not right” that the person who wins the most votes may not be the nominee.

He says he’s doing fine, but if he’s denied the nomination, he warned that “you’re going to have a big problem, folks.”

While Trump has won more states than any of his Republican rivals, it’s possible that he won’t secure the 1,237 delegates needed to win the nomination before the summer convention.

Rival Ted Cruz has been out-maneuvering him at local and state gatherings where delegates are being chosen. Trump recently hired Paul Manafort to craft a strategy to win more delegates.

(TM and © Copyright 2016 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2016 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)