Anti-Masonic Party
Pros: Single issue, so I can generally define the rest of my platform to fit my agenda.
Cons: Last members left 170 years ago. My grandfather was a Mason, which could be a problem for the hardline anti-Masonic base.
Bloc Quebecois or Parti Quebecois
Pros: Introducing the Quebec sovereignty issue to America would shake things up, gather attention.
Cons: Could be the target of a smear campaign by the partisans who think I should be able to speak French.
Blogucrat (Digger True)
Pros: Offers best chance to get elected.
Cons: Stupid name. Not really into Collective Soul.
A grassroots animal resistance/revolution movement party
Pros: Good long-term positioning if animals evolve and get the right to vote, overthrow government, etc.
Cons: In the short-term, I'm a lunatic fringe candidate.
Country Party
Pros: Might be the most defunct party in the US, so it should be easy to get the nod. The name makes it easy to sell a small-town values, pro-America story.
Cons: Rhode Island heritage doesn't offer a lot in the way of electoral vote strategy.
Anti-Nebraska Party
Pros: Good anti-slavery message.
Cons: Essentially concede Nebraska in general election, and have an uphill battle in other Cornbelt states. Would have to give up a big portion of the messaging to explaining why I am anti-Nebraska and defining the wedge to really make it an issue, since this is not a well understood.
"Children's Party"
Pros: Many people like children. Makes debate strategy obvious and ruthlessly effective.
Cons: Constituency is poorly educated, prone to changing their mind, and cannot vote. Could be running against a charismatic Hannah Montana-types for the nomination and might have to settle for VP.