Donald Trump has broken his previous pledge to support the eventual GOP nominee for president if he doesn't get the nomination himself.
During a CNN town hall event in Milwaukee, Wisconsin, Trump was asked if he planned to keep the pledge he signed in Sept. 2015.
"No, I won't," he said, according to Fox News. Referring to the Republican party establishment and the Republican National Committee, Trump explained, "I have been treated very unfairly."
The other two remaining Republican candidates, Sen. Ted Cruz of Texas and Gov. John Kasich of Ohio, both refused to say whether or not they would support Trump if he secures the nomination.
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"Donald is not going to be the GOP nominee," Cruz said. "We're going to beat him." Cruz said a Trump nomination would be "an absolute trainwreck" that "would hand the general election to Hillary Clinton." Trump replied that he didn't need Cruz's support.
Kasich also wouldn't say whether or not he'd stand by the pledge he made. "If the nominee is somebody I think is really hurting the country, and [dividing] the country, I can't stand behind them," Kasich said, according to Fox News.
Cruz's refusal to pledge support to Trump came after an infamous social media feud over the candidates' wives, in which Trump threatened to "spill the beans" on Heidi Cruz.
"Ted has said he does not make a habit of supporting people who insult his wife," said Cruz communications director Alice Stewart, according to Politico.
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Kasich said he believes the candidates should not have been required to answer the question of pledging support in an earlier debate.
As of March 29, Trump has 736 delegates and is seen as the only candidate with a clear path to the nomination by the final primary on June 7. At a recent rally, Trump told his supporters that if he wins in Wisconsin, the race was "pretty much over."
Despite taking back his pledge, Trump held firm to the promise as recently as early March saying, during a debate, that Cruz, Kasich and Sen. Marco Rubio of Florida all deserved credit for how they've impacted the Republican party.