An election to the 56th Parliament of the United Kingdom for the constituency area of Northampton North, held as part of the general election on 7 May 2015.
Conservative hold by Michael Ellis with a majority of 3,245 - 8.2% - on a turnout of 66.6%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| ELLIS, Michael | Con | 16,699 | 42.4% | 8.3% |
| KEEBLE, Sally | Lab | 13,454 | 34.1% | 4.8% |
| RUBYTHON, Tom | UKIP | 6,354 | 16.1% | 13.0% |
| CLARKE, Tony | Green | 1,503 | 3.8% | 2.7% |
| PATERSON, Angela | LD | 1,401 | 3.6% | -24.4% |
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.
An electorate of 59,144, having a valid vote count of 39,411 and an invalid vote count of 112.
Result declared at 05:03 on 8 May 2015.