Neither the Democrats nor the Republicans believe in democracy. It is simply an ideological contest between two different forms of totalitarianism based on big government, where they represent only themselves in their pursuit of personal power and profit.
Over the last hundred years, the Democrat Party has moved farther and farther to the left, evolving from populism to Marxism and developing an operational model resembling that of the mafia. Its leaders are a gaggle of coffeehouse communists and unindicted pfelons, who seek the lifestyles of the rich and famous while practicing the politics of Joseph Stalin.
The Republicans are democratic only in the sense that they are willing to sell their votes to the highest bidder, where their political power and, ultimately, compensation from their rich donors increase proportionally with the expansion of government.