Constituency
Portsmouth North
At a glance
The MP for Portsmouth North is Amanda Martin (Labour), who has held the seat since 2024. At the 2024 general election the seat was a Lab gain from Con: she took 34.8% of the vote for a majority of 780, on a 59.0% turnout. Compared with the 2019 general election, the Labour share of the vote was up 7.8 points, and turnout fell from 64.4%.
2024 general election result
Majority 780 · Turnout 59% · Electorate 70,446
| Candidate | Party | Votes | Share |
|---|---|---|---|
| Amanda Martin | Labour | 14,495 | 34.8% |
| Penny Mordaunt | Conservative | 13,715 | 33% |
| Melvyn Todd | Reform UK | 8,501 | 20.4% |
| Simon Dodd | Liberal Democrat | 3,031 | 7.3% |
| Duncan Robinson | Green Party | 1,851 | 4.5% |
Past election results
Every General Election and by-election in this seat, newest first. Open one for the full candidate list.
| Election | Winner | Result | Majority |
|---|---|---|---|
| 2024 | Amanda Martin (Lab) | Lab gain from Con | 780 |
| 2019 | Penny Mordaunt (Con) | Con hold | 15,780 |
| 2017 | Penny Mordaunt (Con) | Con hold | 9,965 |
| 2015 | Penny Mordaunt (Con) | Con hold | 10,537 |
| 2010 | Penny Mordaunt (Con) | Con gain from Lab | 7,289 |
Members for this seat
Everyone who has won the seat at the elections in our records, which begin with the 2010 general election. Members before then are not shown.
| Member | Party | Period |
|---|---|---|
| Amanda Martin | Labour | 2024 to present |
| Penny Mordaunt | Conservative | 2010 to 2024 |
Source: 2024 general election result from the official Parliament constituency profile.