Democrats have Blue Dogs, considered the conservatives of their party. If we only have 2 main parties they will carry folks of diverse views that lean "mostly" toward one or the other party. A 3rd party is a sure fire election for democrats. Reagan's philosophy was a "big tent" and he carried 49 states in his second election. Republicans won't win any elections without their conservatives and visa-versa. We saw that in the last election when too many libertarians were peeled off by Ron Paul and they refused to vote for Romney. It would work better if the establishment would embrace the conservatives.