Methinks 'Murica needs more than two major parties.
The problem is that you need a majority of the electoral college in order to win the presidency in our country. If you have more than two major parties then shit like this happens:
I know that technically those guys didn’t belong to separate parties, but they were representing four different platforms and interests, and it was a huge disaster because no one got a majority of the votes. John Quincy Adams actually became president even though he lost both the popular vote and the electoral college.