South DownCISTA candidate
CISTA members: 2
May 6, 2010 | Turnout: 60.17% | Winning party: SDLP | Majority: 19.75%
| Margaret Ritchie | SDLP | 48.0% (20648) |
| Caitriona Ruane | Sinn Féin | 28.0% (12236) |
| Jim Wells | DUP | 8.0% (3645) |
| John McCallister | UCUNF | 7.0% (3093) |
| Ivor McConnell | TUV | 3.0% (1506) |
| Cadogan Enright | Green | 2.0% (901) |
| David Griffin | Alliance | 1.0% (560) |