OKLAHOMA CITY (AP) — The League of Women Voters of Oklahoma and two voters at high risk of contracting the coronavirus are suing the state to make it easier for residents to cast absentee ballots by mail.

The lawsuit filed Thursday with the Oklahoma Supreme Court seeks to allow voters to submit a signed statement under the penalty of perjury with their mail-in ballots, rather than requiring an affidavit signed by a notary public.

The plaintiffs include an emergency room nurse in Oklahoma City and a 68-year-old cancer survivor with asthma who wish to cast absentee ballots by mail, but say they...