Former President Donald Trump maintains his advantage in the 2024 Republican presidential nomination race, as support for Florida Gov. Ron DeSantis falls for the second month in a row, according to a new Fox News survey. In addition, President Biden bests his challengers in the survey’s first test of a Democratic nomination contest. -- cut --Among Republican primary voters, Trump leads with 53% support, followed by DeSantis at 21%, Mike Pence at 6%, Nikki Haley at 4%, Vivek Ramaswamy at 3%, and Tim Scott and Liz Cheney at 2% each. Greg Abbott, Chris Christie, Larry Elder, Chris Sununu and Glenn...