I believe in following the Constitution, as a member of the Constitution Party. The Constittution says nothing about parties, but does not ban them either. It is not so much the two party system, as the thread op, it is the character and nature of the two existing parties. They are run by greed, corruption, self interest, and a lust for power. Neither party has as its purpose serving the people. Neither party follows the Constitution. Both parties embrace ideas into official law that are blatant sin, like abortion and same sex marriage for example. The present two parties are a rat's nest of evil. They might as well be Siamese twins.
Since the Democrats and Republicans are not in the Constitution, we do not need an amendment to get rid of them. There is nothing sacred about either. Parties have been eliminated before, such as the Whigs before the Republicans. If we had two parties that had as their primary purpose to serve the people and follow the Constitution, then the system might work. There is nothing wrong with political differences and debate, but there is something terribly wrong with stealing money and power from the American people daily, then pretending like you do not, and creating a false difference between your party and the other party.