GOP presidential candidate Mike Huckabee will hold a rally in support of county clerk Kim Davis on Tuesday outside the Kentucky jail where she’s being held. He announced plans for the “#ImWithKim Liberty Rally” on his campaign website.

A Huckabee spokesperson told CNN on Friday that the candidate, an ardent opponent of same-sex marriage, will meet with the Rowan County clerk before the rally. Davis was arrested on Thursday for repeatedly defying Supreme Court orders to issue marriage licenses.

A petition on Huckabee’s website calls on President Obama, Attorney General Loretta Lynch, and Judge David Bunning to release Davis from jail.

Immediately release Kim Davis from federal custody. Exercising Religious Liberty should never be a crime in America. This is a direct attack on our God-given, constitutional rights.

It has already received more than 55,000 signatures, CNN reported.

Earlier this week, Huckabee voiced support for Davis, who said that she is refusing to grant the licenses “under God’s authority.” On Thursday, he called her arrest proof that we’re witnessing the “criminalization of Christianity in our country” and insisted that “Government is not God.”