Problem with political parties is the analogous to serving people at a dinner party. If the menu you offer has only 3 options everyone is forced to have chicken, steak, or fish, but people's taste are far more diverse. 2 or 3 political parties cannot accurately represent the will of 100's of millions of people who all have slightly differing positions when it comes to the issues. Yes the parties such as the libertarians need to evolve and change, but they will be pulled in so many directions most parties just stay put, so as not to alienate current supporters. In short, change is what the people want to see while those in charge don't want to change and alienate their base. Does the libertarian party have the balls to make a move? I doubt it.