I actually called the program and asked why, even in the face of what should be overwhelming evidence, people continue to vote Conservative, and the reply was that corporate-funded right-wing outlets had more funds available to spread their ideas. I am only partially satisfied with that answer. In my experience, (and I could also cite a source if I could remember what it was) people believe what they want to believe, no matter how much you tell them otherwise. And, if you give them facts or evidence they don't want to hear, they won't listen or believe you, or they won't even remember what you just said.
If you accept my premise, then why is it that people want to believe the Conservative ideology, and vote accordingly?