OKLAHOMA CITY (AP) — An independent Oklahoma voter is challenging the constitutionality of a recently enacted state question that revamps the state Apportionment Commission.

Clark Duffe, an unsuccessful candidate for central Oklahoma's 5th Congressional District last year, filed a lawsuit Monday that asks the state Supreme Court to invalidate State Question 748, which was approved by voters in November.

The commission, renamed the Bipartisan Commission on Legislative Apportionment, decides the makeup of legislative voting districts if the Legislature fails to do so. The state question increased its members from three to seven and requires the governor, speaker of the House and president pro tem of the Senate to each appoint one Democrat and one Republican to the commission.

Duffe's lawsuit says that discriminates against independent voters and makes the state question unconstitutional.