WICHITA, Kan. — The U.S. Election Assistance Commission found Friday that heightened proof-of-citizenship requirements likely would hinder eligible citizens from voting in federal elections, handing down a ruling that denied requests from Kansas, Arizona and Georgia to modify the registration form for their residents.

The decision came just hours before a court-imposed deadline in a lawsuit filed in federal court by Kansas and Arizona that seeks to force the commission to modify state-specific requirements for registering to vote in those states. Georgia, which has a similar voter registration law, is not part of the litigation but was included in the commission’s decision.