Both Republican presidential candidates have turned up the pressure on Kasich, casting the Ohio governor as a nuisance candidate whose presence in the race is only frustrating their efforts to snag the nomination.

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

Even Texas Sen. Cruz, who is second to Trump in the delegate race and eager to whittle the contest down to a two-man battle in the final weeks before the convention, is losing patience with what he describes as Kasich’s “spoiler” bid.

On Monday, Cruz said talk of someone other than him or Trump winning the Republican nomination at a contested convention is “nothing less than a pipe dream.”

The complaints are building ahead of Wisconsin’s primary on Tuesday.

It’s yet another contest that Kasich, who has won only his home state of Ohio, likely has no shot at winning. But Kasich’s out-in-the-open strategy is not to win in the traditional, state-by-state way — but prevent his rivals from clinching the nomination with the requisite 1,237 delegates, in order to trigger a contested convention in Cleveland.

The two candidates with a more plausible path to the nomination – particularly Trump – are signaling the time has come, though, for Kasich to get out.

Trump said Sunday it was unfair for Kasich to continue campaigning. He suggested Kasich follow the lead of former candidates Marco Rubio and Jeb Bush — and quit. He said earlier Sunday he had shared his concerns with Republican National Committee officials at a meeting in Washington this past week.

While Kasich defends his presence in the race, Cruz told Fox News that Kasich at this point is “mathematically eliminated” and right now is only playing the role of “spoiler.”

“A vote for Kasich is a vote for Donald Trump,” Cruz said. “You cannot be the nominee if you lose every state other than your home state.”

As of Monday afternoon, Trump had 736 delegates, Cruz had 463 and Kasich had 143.

Kasich acknowledges he cannot catch up in the delegate race, leaving a contested convention his only path to victory. Still, Kasich suggested that a contested convention would not involve the chaos that party leaders fear.

“Kids will spend less time focusing on Bieber and Kardashian and more time focusing on how we elect presidents,” Kasich told ABC. “It will be so cool.”