Voters do not have the resources to vet a candidate on their won, that is supposed to be the media’s role. Clinton and Kennedy may not have released their medical records but we did know where and when they were born, where they traveled to internationally and how they did in school. I think that information is vital to vetting a candidate. How is a voter supposed to vet Barry if that information is not available?
Voters evidently felt they had enough information or they were certain that McCain would be worse. Don't ask me to explain an Obama voter, I worked on McCain's campaign even though I disliked him and his gutting of the First Amendment through McCain-Feingold. I had enough information to know that Obama would be a catastrophe for our country even without seeing his birth certificate.