I think they do know that. They certainly believe that they have a hardcore of followers who agree with them (and they do), but they know lots of us oppose their vision. They just don’t think we should get a say.
We really should stop assuming these are just stupid people and see them for the threat that they are, which are fascists with an agenda to impose their views on the rest of us. If they get into power again, lots of people will be fucked. We dismiss that at our peril.