When Republican presidential front-runner Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE said on Tuesday that he would no longer abide by a pledge he signed to support the party’s nominee, he may have cost his campaign at least 50 delegates, according to a Time report.

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The Republican Party in South Carolina, whose entire 50 delegates were awarded to Trump for his victory in February, required candidates to make the pledge in order to be on the state’s primary ballot. Now that Trump has said he would break his promise, state party officials are exploring a legal challenge to withhold delegates from him.

“Breaking South Carolina’s presidential primary ballot pledge raises some unanswered legal questions that no one person can answer,” South Carolina GOP Chairman Matt Moore told Time. “However, a court or national convention Committee on Contests could resolve them. It could put delegates in jeopardy.”

The state has yet to select its delegates for the Republican National Convention. Once they do, the Palmetto State’s Republican branch can file a legal challenge to attempt to release them from their binding commitment to cast their votes for Trump.

At a CNN town hall on Tuesday, Trump was asked if he was keeping to his promise to support the eventual nominee.

"No, I don't anymore," he responded. "I have been treated very unfairly."