To play devil's advocate: Is there a time when detailed research caused you to vote in a way that is counter to what you would have voted given your own innate

To play devil's advocate: Is there a time when detailed research caused you to vote in a way that is counter to what you would have voted given your own innate instincts? If not, then? I'm going to guess that most people investigate issues to validate their pre-existing opinions, not to form them.