To underscore how much Iowa means to Ron DeSantis, the Florida governor was unwilling to put his campaigning there on hold even in the waning hours of 2023. At a New Year’s Eve event in a Sheraton Hotel ballroom in West Des Moines, jeans and cowboy boots outnumbered tuxedos and cocktail dresses, and Miller Lite seemed more popular than champagne. But the modesty of the affair, where roughly 200 people turned out for the last campaign event of the busy year in Iowa, belied its the importance to the host, who has wagered the future of his Republican bid for...