It depends to what capacity one "believes in democracy". If someone thinks democracy, like the god-concept, has its own inherent and independent existence in a way, then I'd say you have a point. But even abstract concepts can have evidence to exist, so long as we distinguish that existence not as an independently existing entity but as an occasion between interrelated parts; an event if you will. But, what does exist inherently as an entity (presumably besides the universe) anyway??

You seem to have a simplistic ontology. It's much more factual and reasonable to say democracy exists than God exists.