Brendan O'Hara Elections contested
Parliament Member page for Brendan O'Hara
Elections listed as contested and won are those forming part of the general elections in 2010, 2015, 2017, 2019 or 2024 and any by-election contested during the 58th Parliament. A person may have contested an election outside this grouping.
| Election | Constituency | Election type | Party | Vote count | Vote share | Position |
| 4 July 2024 | Argyll, Bute and South Lochaber | General election | SNP | 15,582 | 34.7% | 1st |
| 12 December 2019 | Argyll and Bute | General election | SNP | 21,040 | 43.8% | 1st |
| 8 June 2017 | Argyll and Bute | General election | SNP | 17,304 | 36.0% | 1st |
| 7 May 2015 | Argyll and Bute | General election | SNP | 22,959 | 44.3% | 1st |