The National Organization for Marriage — an organization that lost big when the Supreme Court legalized same-sex marriage — is launching an ad campaign in South Carolina asking voters there to “Dump Trump.”

Their reason for going after 2016 GOP presidential front-runner Donald Trump?

The billionaire businessman didn’t speak out against the justices who gave the go-ahead for same-sex couples to marry.

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In an email sent to followers, — including a call for donations — NOM head Brian Brown flirted with his group’s non-profit status by promoting the ad attacking Trump while encouraging followers to get behind Texas Sen. Ted Cruz.

“This powerful new commercial could really make a difference in who wins in South Carolina. Most experts believe that the South Carolina race will come down to Donald Trump or Sen. Ted Cruz. When it comes to marriage, the two couldn’t be further apart, he wrote. “Donald Trump dumped the fight for marriage as soon as the US Supreme Court issued its illegitimate and anti-constitutional ruling, while Ted Cruz responded by sponsoring a constitutional amendment to restore the right of states to preserve true marriage.”

In the ad, Trump is asked about the Supreme Court ruling, to which he replies: “You have to go with it. The decision that has been made and that is the law of the land.”

According to the ad, “When Trump quit on marriage, he quit on South Carolina and over 50 million American voters.”

How effective the ad may be remains to be seen. There was no indication of how big an ad buy the struggling organization made or whether they are depending upon their ad to go viral online –where it has garnered only 70 views in over 24 hours.

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Currently Trump leads Cruz by 17 points in evangelical-heavy South Carolina, according Real Clear Politics.

Watch the ad below via NOM’s YouTube account: