Why do you assume he can’t have them too?
The cross tabs of the polls taken on the GOP primary show a DISTINCT split between Trump & Desantis. Even moreso now women are choosing Trump overwhelmingly.
And the reason Desantis won't pull in those demographics (Along with white working class) at Trump levels is because Desantis will push traditional economic principles. That is where the GOP started losing the fight with the Democrats. Don't have to be communist but you can't be naive LIberatarian either.
And of course Desantis will continue American global wars. Very unpopular.