[Don]

" So what happens with all the older people that maintain 2 residences and come here for the spring/summer months and then go back in the winter?
Are they re-registering everytime they move? I don't think so. "

There is a major difference in having a permanent address in one state and visiting a state on a temporary basis, one or the other has to be the permanent, not both. As an example, believe FL for the Homestead Exemption requires FL to be the permanent address. Does the driver's license address match the registration address and the names are the same. Legally, can't have two driver licenses from different states