Donald Trump’s campaign anticipates the billionaire will win the Republican presidential nomination with more than 1,400 delegates on the first ballot at the upcoming GOP convention, the Washington Post reported Wednesday.

A memo that was reportedly sent to surrogates shortly after Trump won the New York primary Tuesday night describes the Republican front-runner as the “prohibitive favorite” in the GOP race and suggests he’ll surpass the 1,237 delegates needed to secure the nomination at the convention.