Ron DeSantis is backing down — and getting behind former President Donald Trump. The Florida governor, who bet everything on the Iowa caucuses and lost, ended his 2024 presidential campaign on Sunday, less than 48 hours before the New Hampshire primary, a contest that he had virtually no chance of winning. In a video posted online just two hours before a scheduled campaign stop in Manchester, DeSantis acknowledged that he had no path forward in the race for the 2024 Republican nomination for president. “If there was anything I could do to produce a favorable outcome — more campaign stops, more…