Jeff Mattox, co-chair of the Kershaw County Republican Party, is resisting calls for him to resign. Mattox, who is a representative of the Kershaw County Patriots -- a Tea Party-like group -- confirmed Tuesday that his fellow co-chair, Chris Oviatt, asked him to step down. Oviatt said he did so after learning that Mattox had “Liked” a link posted by another Patriots member to the group’s Facebook page to a controversial article.