President Donald Trump on Saturday used his final Florida campaign event before next week’s elections to implore supporters to send Republicans to the governor’s mansion and the U.S. Senate, claiming that allowing Democrats to win either office would bring ruin to the state he also calls home. Trump returned to Florida for the second time this week to help rally support for Gov. Rick Scott, who is challenging Democratic Sen. Bill Nelson. Trump also sought to boost former Rep. Ron DeSantis, who is facing off against Andrew Gillum, the Democratic mayor of Tallahassee, in the race for governor. Trump argued...