Opponents of an initiative petition seeking to implement nonpartisan redistricting in Oklahoma are asking the state’s highest court to block the measure from moving forward.

Two legal challenges filed Friday with the state Supreme Court allege the petition is flawed and violates Oklahomans’ First Amendment right to participate in the political process.

An Oklahoma group called People Not Politicians recently filed an initiative petition seeking to completely revamp how Oklahoma’s legislative and congressional districts are drawn in order to minimize partisan gerrymandering — when districts are drawn to favor one political party.

The petition proposes taking redistricting power away from Oklahoma’s Republican-controlled Legislature and giving it to a nine-member Citizens' Independent Redistricting Commission made up of non-elected officials from different political parties.