The U.S. Supreme Court declined on Monday to hear a challenge to Mississippi's lifetime ban on voting by people convicted of a wide range of felonies, a policy adopted in 1890 during the Jim Crow era that stands as one of the toughest such restrictions in the nation.

Monday’s arguments will center on whether the case should be decided by state or federal courts — a decision which could be crucial in whether the results of the race are ultimately overturned.

The Supreme Court has left in place Mississippi’s Jim Crow-era practice of removing voting rights from people convicted of certain felonies, including nonviolent crimes such as forgery and timber theft.

The Supreme Court on Monday said it will not consider whether a Mississippi law banning people convicted of certain felonies from voting should be overturned. The Jim Crow-era practice extends to people convicted of nonviolent crimes,