Because Republican voters decided to make the re-election of President Trump as a symbolic message that they're angry at DC and their self-serving abuses of power.
Because they wanted Governor DeSantis to remain in Florida and deliver it to President Trump, with all the accolades and future support that would go with it for a 2028 run of his own.
Because Republican voters think that DeSantis squandered a potential gift horse that was going to be handed to him.
-PJ
So how will Trump win?
Three solid reasons right there.
Originally I had no antipathy towards Gov. DeSantis. But, then (as you pointed out) he chose personal ambition over the welfare of the country.
Sad. He coulda been a contender.