A Missouri judge has allowed the use of new U.S. House districts backed by President Donald Trump. A judge ruled Friday that the new districts can remain in place while election officials determine whether opponents submitted enough petition signatures to trigger a referendum. The ruling is a victory for Republicans, because it means the new district lines are to be followed as candidates file for office. Opponents had argued the districts should have been suspended after referendum petitions were submitted. Republicans hope the new districts will help them win an additional seat in the November elections.