Elections are not democratic because the candidates are always elites of some form. Even with universal sufferage and an egalitarian society there will always be a selection bias towards people who want power and people who are good at winning elections (but not necessarily good at governing). A real democracy would have election by lottery to ensure every segment of the population was represented. This hasn't ever existed because past governments who elected by lottery (e.g. Ancient Athens) had only a small percentage of society represented as citizens.