FILE - In this Aug. 15, 2015, file photo, Utah GOP delegate Ed Redd casts his vote for the offices of treasurer, secretary and vice-chair in Sandy. Utah's Republican Party is pressing on with a legal battle that's divided the state GOP and will argue before a Denver-based appeals court Monday, Sept. 25, 2017, that a state candidate nominating law violates its rights. The lawsuit is the Utah GOP's second attempt to chip away at the 2014 law, which allows candidates to bypass the party's nominating conventions and instead participate in a primary. (Leah Hogsten/The Salt Lake Tribune via AP, File)