On Tuesday night, Donald Trump the Republican front-runner for his party’s nomination said that he no longer would honor a pledge of supporting the eventual nominee of the GOP for President.

At the same time, his fellow candidates for the nomination Senator Ted Cruz and Governor John Kasich would not commit to backing the pick of the party at this summer’s convention.

All three contenders of the GOP appeared at a town hall on CNN Tuesday night a week prior to the April 5 Wisconsin primary.

When asked if he would hold his pledge signed in September of supporting the GOP nominee, Trump answered no he would not.

The billionaire explained he was taking the pledge back because he has not been treated fairly and listed the Republican Party, the Republican National Committee and the party establishment amongst those he said have wronged him.

Senator Cruz, who sits second behind Trump in the delegate count, shrugged off questions about whether he is willing to support Trump as a nominee. He said that Trump will not be the party’s nominee. Adding that he believes he will defeat him. The senator from Texas added that the party nominating Trump would result in a train wreck and hand the election in November to Hillary Clinton.

Cruz was followed on the stage at the town hall by Trump who said he did not need Cruz to promise to support him.

Ohio Governor John Kasich has vowed to maintain his campaign until the convention this summer despite sitting a distant third in delegates. He also did not say if he would stand by a pledge.

If the nominee is someone I consider is hurting the U.S. I cannot stand as one of his supporters.

Trump currently has 736 delegates and the only GOP candidate with a path that is realistic to clinching the party’s nomination on June 7 at the end of the primary races.

However, a Wisconsin win by Cruz narrows the already tight Trump path to his party’s nomination and increase the prospect of having a contested convention.