“There should be a five year waiting period for people to vote if they move to another state.”
That would not be constitutional.
The simple answer is not to sell your property to people from Blue States.
Which would be questionable also.
Legally, you can get into hot water from that. Local farmers back home used to try to keep people “from the city” from buying acreages. A few rather expensive lawsuits later that stopped.
Unless it is a private sale, you have to be VERY careful