MILWAUKEE — Republican presidential front-runner Donald Trump is pushing rival John Kasich to get out of the White House race, arguing that the Ohio governor shouldn’t be allowed to collect future delegates because the nomination is already beyond his grasp.

Trying hard to right himself after a difficult week, Trump said it was unfair for Kasich, the winner of only his home state’s primary, to continue campaigning. He suggested that Kasich, who has pledged to make it to the summer convention, follow the lead of former candidates Marco Rubio and Jeb Bush — and quit.

“If I didn’t have Kasich, I automatically win,” Trump said Sunday evening in West Allis, Wisconsin.

Trump said Kasich could ask to be considered at the GOP convention in Cleveland in July even without competing in the remaining nominating contests. He said earlier Sunday that he had shared his concerns with Republican National Committee officials at a meeting in Washington this past week.

Kasich’s campaign countered that neither Trump nor Texas Sen. Ted Cruz would have enough delegates to win the nomination outright in Cleveland.