Ron DeSantis’ entry into the 2024 White House race against former President Donald Trump sets up a clash of the Republican Party’s two leading figures as the Florida governor attempts to topple a man who has dominated the GOP for the last seven years.

Trump—who has established himself as the clear front-runner for the Republican nomination—has spent the months since he launched his own campaign working to hobble the once-ascendant DeSantis, whom he and his team have long viewed as his most serious challenger. DeSantis so far has tried to remain above the fray, ignoring Trump’s escalating attacks on everything from his record to his personality.