Should Huckabee and Paul Drop Out?

The idea has been put forward on various political blogs, tv shows, radio shows and even in a recent Facebook/ABC opinion poll that Huckabee and Paul should drop out now since Romney did. The arguments vary but most are some variation of the unelectability at this point or that them losing to McCain somehow hurts him in the general.

Ideas matter and both of them have important ideas that can and should be addressed at convention. Politics has become more about winning and less about democracy. Everyone's ideas should all be represented at convention so the platform is balanced and not just one man's vision.

With the definition of conservatism apparently up for grabs, I for one would prefer to at the very least see more than just McCain's "conservatism" represented when they draft MY party platform.