Siobhain McDonagh Elections won
Parliament Member page for Siobhain McDonagh
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 57th and 58th Parliaments. A person may have contested and won an election outside this grouping.
| Election | Constituency | Election type | Party | Vote count | Vote share | Majority |
| 4 July 2024 | Mitcham and Morden | General election | Lab | 25,085 | 55.4% | 18,761 |
| 12 December 2019 | Mitcham and Morden | General election | Lab | 27,964 | 61.1% | 16,482 |
| 8 June 2017 | Mitcham and Morden | General election | Lab | 33,039 | 68.7% | 21,375 |
| 7 May 2015 | Mitcham and Morden | General election | Lab | 27,380 | 60.7% | 16,922 |
| 6 May 2010 | Mitcham and Morden | General election | Lab | 24,722 | 56.4% | 13,666 |
Maiden speech
Siobhain McDonagh's maiden speech was made on 17 June 1997, as the member for Mitcham and Morden. The speech took place in the 1st session of the 52nd Parliament.