The Minnesota branch of the American Civil Liberties Union (ACLU) filed a lawsuit in state court on Monday seeking to overturn a law that denies felons who are on probation the right to vote. The suit claims the law violates equal protection, due process and voting rights guaranteed by the state constitution.

Minnesota automatically disenfranchises anyone convicted of a felony, barring them from voting until their rights have been restored. However, a state statute provides that the right to vote will only be restored after the sentence has been discharged by court order or by its expiration. The ACLU estimates that more than 52,000 people have been disenfranchised by the law, like Jennifer Schroeder, one of the four plaintiffs in the case. Schroeder served only one year in county jail, but because her sentence includes 40 years of probation, she will not be able to vote until 2053.

Minnesota Secretary of State Steve Simon did not comment on the lawsuit, but a spokesperson for his office noted his support for “changing the law to restore the right to vote.”