I'm going to start this off with a few facts:
Planet Earth: Holding a population well into the billions
: Most of the planet is covered in water, but has several continents
: Earth has hundreds of countries
: Most countries have their own system of government and various laws that its people have to abide by
That being said, on with the topic. I never understood how Alien governments worked. I realize, of course, this is a sci-fi series, and politics tend to be boring wherever you are in the universe (that's just the way I see, feel free to disagree) but I never understood how one government system--such as the Andalite Electorate-- can govern an entire speices that numbers well into the hundred millions--unless I'm mistaken. Obviously Earth is different from the Andalites and the Yeerks (who aren't nearly as numerous) or the Hork-Bajir (tiny population [especially after the Alloran incident] and no official form of government outside the elders that they listen to) but you'd think the Andalites would have multiple systems of government; especially since they have less water on their planet.