The anti-Trump Our Principles PAC argued that Trump’s path to the GOP nomination is now “nearly impossible” and said Trump’s claim that victory is at hand is “detached from reality,” in a memo detailing their strategy to derail him.

“Despite Trump’s victory in New York on Tuesday night, he still has a nearly impossible path to secure the 1,237 delegates needed to win the nomination on the first ballot. As a consequence, we are confident that there will be an open convention — and that Trump will not be the Republican nominee,” the political action committee wrote in the memo titled “Delegate math update, New York reality check.”