Parties
| Full Name | Short name | Notes |
|---|---|---|
| Liberal Democrat Party | Lib. Dem. | Founded 1988 by merger of Liberal Party and SDP. |
| Liberal Home Rule | Lib-HR | |
| Liberal-Labour | Lib.-Lab. | |
| Liberal National | Lib. Nat. | |
| Liberal Party | Liberal | |
| Liberal Party | Liberal | Merged with SDP 1988. |
| Liberal Unionist | LU | 1886-1912. Split from Liberal Party over Irish Home Rule issue; absorbed into Conservative Party in 1912. |
| National Democratic | Nat. Dem. | |
| National Democratic Party | NDP | Formed 1918? |
| National Irish Labour | NI Lab | |
| Nationalist | Nationalist | |
| Nationalist (Anti-Parnellite) | Nat. (A-P) | |
| Nationalist Independent | Nat. Ind | |
| Nationalist (Parnellite) | Nat. (P) | |
| National Labour | Nat. Lab. | |
| National Liberal | Nat. Lib. | |
| National Liberal and Conservative | Nat. Lib. & Con. | |
| National Party | National | Not to be confused with various Nationalist parties |
| National Socialist Party | NSP | |
| National Unionist | Nat. Unionist |