Imagine that you live in a country in which in its simplified and most basic form, has but two families, one being the McCoys and the other being the Hatfields. Unfortunately, for the McCoys, they are significantly outnumbered by the Hatfields, so that in this democratically elected government in which each citizen gets one vote, the Hatfields by majority vote control the judicial, as well as the legislative, and the executive branches of this government. Although, this government does have a written constitution, its interpretation is done by the judicial branch, its enforcement is done by agents of the state, and the executive branch is the commander-in-chief of it all. As you might suspect, this democratic government is highly favorable to the Hatfields and not at all beneficial to the McCoys, yet, in theory, since it is a government of the majority, and thereby majority rules, that seems fair, but it sure isn't in its unfair execution of justice.
One person, one vote, has its place, but in order for it to be effective as a rule in any country and at any time, there has to be a higher law that all must answer to. This law exists and is known as natural law, basically defined as the law that all peoples are subject to, which is objective, fair, consistent, and moral in all of its myriad aspects. The point, therefore, of any civil government, is to band together in one body politic so as to protect and defend the natural rights that all citizens have within a given country, and therefore governments are instituted amongst mankind, deriving their just powers from the consent of those governed. This government is constituted amongst the people so as to most effectively provide them with fair opportunity, safety in numbers, and the freedom to pursue their own happiness.
If, on the other hand, everything comes down to how the majority rules at the ballot box, no matter how slight or how extensive that vote differential is, in which, the majority than determines what it will do to the minority or how they will properly reward the majority, you perhaps have a democracy in name, but have a tyranny in actuality. Above it all, in any real legitimate government, there is justice, which is in its application, equally applied to all, it is fair, it its reasonable, it is considerate, it is humane, and it is consistent. We know when the law is just, by the fruits of the laws within a given country, to wit, there will be equality of opportunity, there will be an equality of liberty, and there will be an equality of freedom.
The rights of mankind are not held in the scepters of kings, it is found only in the Kingdom of God that has bestowed upon each of us, certain, unalienable rights. A legitimate democracy is only legitimate when it affirms our unalienable rights, as well as recognizing that any democracy governs best, when it governs least, recognizing that good governance in all of its many forms, simply comes down to seeing the other as equal in rights and opportunity as one self, favoring none at the expense of the other, and being a good neighbor, through and through