“Several members of the panel did question whether Utah’s goal of broader participation outweighs the party’s objections. If a candidate were to win a primary, then campaign in a way that didn’t match the party’s platform, it would be “hugely divisive,” Tymkovich said.

Judge Carlos Lucero, who was nominated by former President Bill Clinton, also questioned whether the law weakens political parties.

The state GOP appealed to the 10th Circuit after a federal judge in Utah ruled against it last year. The party unsuccessfully made similar arguments in a 2014 lawsuit.”