SALT LAKE CITY — Utah’s Republican Party plans to challenge last month’s decision by a federal appeals court that upheld a state law overhauling how political parties nominate candidates.

The state GOP on Monday announced it has hired attorney Gene Schaerr, who lead the state’s unsuccessful defense of a constitutional amendment to ban same-sex marriage.

The 10th U.S. Circuit Court of Appeals last month said the 2014 law balances the state’s interest in managing elections while allowing political parties and residents a way to express their political choices.

Utah’s GOP argued the law allowing candidates to bypass GOP nominating conventions and instead participate in a primary is unconstitutional.

The lawsuit was the party’s second unsuccessful attempt to challenge the law.

Utah GOP member Don Guymon says the party will request a hearing before the full appeals court, known as an “en banc” review.