I would add though, that often, the best leaders occur organically---not democratically.
The ones who seek leadership tend to focus on acquiring power/privilege through leadership, and view the responsibility of such positions as a "necessary evil" or "comes with the territory". Unfortunately, in many "democratic" systems, people have to put themselves forward to run for leadership, the act of which in itself selects for this group of people.
In contrast, those who have leadership thrust upon them by others ("organic") generally have been viewed as capable by those doing the electing, and tend focus on the responsibilities of the position, rather than the accompanying power and privilege.
IMHO, the reluctant leaders often make the best ones, because they tend to be reluctant as they realize the awesome responsibilities of leadership, and are therefore reluctant to assume these responsibilities lightly. The ones who SEEK leadership, frequently do so for reasons that do not necessarily coincide or align with fulfilling responsibilities to the led.