The Musk/Trump team are decimating many of the government services they rely on and they know Republicans in Congress are doing absolutely nothing to stop the carnage, so they vote for more Republicans. When Fall rolls around and there is no flu shot to help protect them, who will they blame? When they apply for Social Security (Florida has a lot of retirees) and there is no one to help them and answer questions, what will they do? They may have to drive a hundred miles or more to find a Social Security office or they are likely to be limited to calling a phone number that gets answered in another country by a person whose English is incomprehensible after Musk privatizes Social Security.
Republicans consistently vote against their own interests. Is it so important to them to hate Democrats that theyre willing to hurt themselves?
Republicans thrive by instilling fear in voters and hatred of people not like them. Democrats run on policies to help people. It turns out that fear and hatred are better motivators for Republican voters than their own self interest.