The Oklahoma Supreme Court on Tuesday heard two legal challenges to an initiative petition seeking to implement a redistricting process in Oklahoma that’s independent of the state Legislature.

The challenges took issue with the description of the initiative petition and claimed the petition violates some Oklahomans’ First Amendment rights and breaks the state’s single-subject rule, which says initiative petitions may deal with only one main issue.

An Oklahoma group called People Not Politicians wants the chance to circulate petitions asking Oklahoma voters to take redistricting power away from state lawmakers. The group aims to create a Citizens’ Independent Redistricting Commission to take over redistricting efforts.

Attorney Robert McCampbell of Gable Gotwals, who is representing the Oklahomans challenging the petitions, said proposed State Question 804 violates the single-subject rule because legislative and congressional redistricting are treated differently, although state legislators are responsible for both.