I agree with the reasons cited for having elections. I would go a little further and say they are necessary for reasons of selection and removal. Government officials work for all citizens. Therefore, the citizens must appoint them. I cannot think of a method other than elections to accomplish this whereby it would reflect the citizens’ wishes in the best possible way.
The problem with appointing government officials is how do you decide who gets to do the appointing? Then who appoints the appointer? Etc. There is an infinite regress. Unfortunately, in that type of situation, the appointer typically ends up becoming a family member or close associate of the person. That is how monarchies are born.
An election has a drawback in the sense that the losing side’s wishes are not respected. However, that is why the correct system of government must be a constitutional republic and not a democracy. Constitutionally defined and delimited rights, and clearly enumerated and delimited governmental powers make sure that whatever government does, it is highly unlikely to violate an individual’s rights. In a constitutional republic, it is likely that most people wouldn’t vote. They wouldn’t have to, since the range of actions of government officials would be so delimited. Fortunately, in a free society, politics would become a very minor concern among the populace, since government’s influence on our lives would be so minimal.
The even more important reason for elections is removal. They are a superb check on government power. Let’s say a government official does somehow become bad. Vote him out of office or impeach him. That is also the benefit of term limits, which prevent against a populist-type politician from staying in power (e.g.: Franklin Roosevelt).
Finally, appointments of many government officials, including judges, is entirely consistent with elections. As long as the key governmental “first movers” are elected, other officials could be appointed. I suspect a legislature, as the enactor of laws, would be elected. After that, conceivably even the executive and most or all of the judges could be appointed. In our system, the President is elected. I do not think that is a necessary feature of a constitutional republic, although it has its advantages.
The American system of checks and balances was carefully devised by the Founding Fathers after studying the failures of other representative systems, particularly those of the Ancient Greeks and Romans. I am impressed by much of the logic of the system, including such features as lifetime appointments of Supreme Court judges so that they are removed from the day-to-day political fray. The three-part system we have – an executive, a legislature and a court system – sums up all of the governmental institutions there should be in a free society.