PORT ORANGE, Florida — GOP state Sen. Randy Fine is seeking to calm Republican preelection jitters in what has become an unusually competitive special election for a solidly red seat in central Florida. Fine is facing Josh Weil, a Democratic schoolteacher. While Fine is still favored to win the race to replace former Rep. Michael Waltz, who stepped down to become President Donald Trump’s national security adviser, voters say they are unsure about him. Republicans began to sound the alarm last week after early voting totals and polls showed a closer-than-expected contest. An internal poll from Republican firm Fabrizio Ward...