Parties
P
| Full Name | Short name | Notes |
|---|---|---|
| Plaid Cymru | PC | Formed 5 August 1925. Registered 14 January 1999. MNIS Party ID 22. Electoral Commission ID PP77. |
| Protestant Unionist Party | PUP | Formed 1966. Dissolved 1971. Preceded by Ulster Protestant Action. Succeeded by Democratic Unionist Party. MNIS Party ID 23. |