it doesnt have to be a national party initially. If you took a pro-privacy, socially-liberal, fiscally conservative platform you could make a strong push in large urban centers across the nation. I know that the bay area would be accepting of this (accepting != elected, but it wouldnt get laughed at by the voters, only by the national media).
you just cant name it pirate party. In the us that would probably work against you.
you just cant name it pirate party. In the us that would probably work against you.