Looking at the platform of the Const. Party, it is the same stuff L Ron Paul is pushing. We can get close to the same with the Dems.
Then take that conservative Party over and craft away segments that are Ron Paulian, craft in segments that are in line with Free Republic-type thinking, make it solid conservative, get a decent/famous nominee, and go for it nationwide. It could be done, if there were a massive exodus of GOP conservatives, by sheer numbers. It would be almost like alighting from a sinking ship and getting into a raftboat, but at least we would be alive and able to build something.