This survey is based on candy bought, not favorite candy. MatPat made a video on why the reason candy corn is a favorite is because it is cheap in terms of per pound basis. If the task for people is buy 1 pound of candy, the answer is hot tamales and candy corn. Cheap candy.
Just supports the idea that something's wrong down there. Candy's not free, but it ain't expensive, either. If all your entire state can afford is candy corn...?
My parents bought and gave out those red and orange peanut butter chew candies that are horrible and disgusting and that no kid likes. Worse, they bought a huge amount at once and kept giving out what remained year after year.