Some of them believe they are in the majority, but some them know they are not.
The ones that know they are not in the majority believe that it doesn't matter because they know what is best for everyone. They believe the majority is voting against their own interests. They believe that if you disagree with them, you are too stupid to know what's good for you, so they must use whatever means necessary to silence you and disenfranchise you.. for your own good you know. You will thank them later. These are the dangerous ones, like Obama, Pelosi, etc.