Results for the UK general election on 7 May 2015 Wales - Elections won by Liberal Democrat
| Constituency | Candidate | Electorate | Turnout | Votes | Vote share | Vote change | Majority |
| Ceredigion | WILLIAMS, Mark | 54,242 | 69.0% | 13,414 | 35.9% | -14.2% | 3,067 |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.