If you consider "the people" of a nation-state as a whole coherent historical subject, then if they vote in a dictatorship, I guess it remains democratic until such time as "the people" would prefer to remove the dictator. This is the problem of places like Russia where Putin's popular incumbency is so powerful there's a huge grey area—he's a dictator, but "the people" want him.
The rest of the norms Bandy is talking about are not essential, they have the same sort of contingent existence as a temporary dictator. They don't exist everywhere there is a recognisable democracy.
The kinds of things that are constitutive are in the glue of the phrase "coherent historical subject" above—in Australia, for example, the nation-state being founded on land ownership, the island border, and Aboriginal dispossession. These are the kinds of things we couldn't really vote out of existence without dissolving the whole structure, but we've certainly violated the rights of minorities throughout our history.