 Any candidate who received the required "50 per cent plus one vote" in the primary, or was unopposed in the primary, was declared elected and did not appear on the general election ballot.The U.S. Supreme Court in "Foster v. Love" (1997) ruled that this system was in violation of federal law when used for congressional elections, since the federal law requires all members of Congress to be elected on the federal election day; thus, candidates who won in primaries earlier than the federal election day violated this law.After the decision, Louisiana moved the congressional primary date to November and the run-off to December in order to keep the nonpartisan blanket format.