"are you saying that we would not allow a communist party member to be elected if that were the case?"
No, there is a big difference between individuals being elected that are unsavory characters (hey, we have a few up here beleive me...), and a form of government.
There are no "elections" in a military dictatorship, monarchy, oligarchy or one-party state (fascist, communist, ect) that the ruling group does not approve of. There is no "loyal opposition", Congress, Parliament or the like.
The USA wanted to install a multi-party representative democratic form of government post- war, and thats what happened. Again, im not saying thats "bad", im just saying thats the way it is.
Democracy is but one form, there are many. Most of them suck.