Melanie Onn Elections won
Parliament Member page for Melanie Onn
Elections listed as contested and won are those forming part of any general election or by-election contested since since the 2010 general election. A person may have contested an election outside of this grouping.
| Election | Constituency | Election type | Party | Vote count | Vote share | Majority |
| 8 June 2017 | Great Grimsby | General election | Lab | 17,545 | 49.4% | 2,565 |
| 7 May 2015 | Great Grimsby | General election | Lab | 13,414 | 39.8% | 4,540 |
Maiden speech
Melanie Onn's maiden speech was made on 1 June 2015, as the member for Great Grimsby. The speech took place in the 1st session of the 56th Parliament.