The state of Michigan has appealed a judge's decision that part of a law establishing a January 15 presidential primary in Michigan is unconstitutional.
The state attorney general's office wants a decision from the Michigan Court of Appeals by Friday. Supporters of a primary say time is of the essence.
The appeal seeks to put on hold a court order blocking the primary from being held while state attorneys argue that the law is constitutional.
Supporters of an early primary say it would give Michigan a bigger role in selecting presidential candidates.
Ingham County Circuit Court Judge William Collette last week ruled part of the law is unconstitutional.
Individuals who brought the suit are opposed to a provision of the law that gives the state Democratic and Republican parties exclusive access to lists of who voted in their respective primaries.