Republican presidential candidate Mike Huckabee on Tuesday will join a protest in support of Kentucky clerk Kim Davis.

Davis, the elected clerk of Rowan County, spent the Labor Day weekend behind bars after a federal judge on Thursday found her in contempt for ignoring his ruling ordering her to issue marriage licenses to all qualified couples. Davis has said that issuing marriage licenses to gay and lesbian couples would violate her conscience.

Davis on Sunday appealed the judge's ruling.

Huckabee has said that he will meet privately with Davis before joining the protest outside the Carter Detention Center where she is being held.

Over the weekend, Huckabee defended Davis, saying during a This Week appearance that she was fighting “judicial tyranny.”

(Related: Mike Huckabee claims Kim Davis fighting “judicial tyranny.”)