Alliance By-elections
| Election | Constituency | Candidate | Vote count | Vote share | Position |
| 3 May 2018 | West Tyrone | Stephen William Donnelly | 1,130 | 3.2% | 5th |
| 7 March 2013 | Mid Ulster | Eric Bullick | 487 | 1.3% | 4th |
| 9 June 2011 | Belfast West | Aaron McIntyre | 122 | 0.5% | 6th |