The tables below show results for all UK by-elections held for seats at Westminster since the 2015 general election. A chart showing by-election turnout is also available.
Held 16th June 2016, due to incumbent MP standing down after election to London Mayor.
| Labour | 55.9% |
| Conservative | 36.1% |
| Green | 2.6% |
| Liberal Democrat | 2.6% |
| UKIP | 1.6% |
| Candidate | Party | Votes | % | ±% |
|---|---|---|---|---|
| Rosena Allin-Khan | Labour | 17,894 | 55.9 | +8.7 |
| Dan Watkins | Conservative | 11,537 | 36.1 | –5.8 |
| Esther Obiri-Darko | Green | 830 | 2.6 | –1.5 |
| Alex Glassbrook | Lib Dem | 820 | 2.6 | –1.4 |
| Elizabeth Jones | UKIP | 507 | 1.6 | –1.3 |
| Des Coke | Christian Peoples | 164 | 0.5 | – |
| Alan Hope | Monster Raving Loony | 54 | 0.2 | – |
| Graham Moore | English Democrats | 50 | 0.2 | – |
| Akbar Ali Malik | Immigrants Party | 44 | 0.1 | – |
| Ankit Love | One Love Party | 32 | 0.1 | – |
| Zirwa Javaid | Independent | 30 | 0.1 | – |
| Zia Samadani | Independent | 23 | 0.1 | – |
| Bobby Smith | Give Me Back Elmo | 9 | 0.0 | – |
| Smiley Smillie | Independent | 5 | 0.0 | – |
Tooting 2015 general election result
Held 5th May 2016, due to incumbent MP standing down to run for Welsh Assembly.
| Labour | 52.6% |
| UKIP | 16.2% |
| Plaid Cymru | 15.7% |
| Conservative | 12.6% |
| Liberal Democrat | 3.0% |
| Candidate | Party | Votes | % | ±% |
|---|---|---|---|---|
| Chris Elmore | Lab | 12,383 | 52.6 | –0.3 |
| Glenda Davies | UKIP | 3,808 | 16.2 | +1.2 |
| Abi Thomas | Plaid Cymru | 3,683 | 15.7 | +5.6 |
| Alex Williams | Conservative | 2,956 | 12.6 | –3.3 |
| Janet Ellard | Lib Dem | 702 | 3 | –0.0 |
Ogmore 2015 general election result
Held 5th May 2016, due to the death of Harry Harpham MP.
| Labour | 62.4% |
| UKIP | 19.9% |
| Liberal Democrat | 6.1% |
| Conservative | 5.6% |
| Green | 4.2% |
| Candidate | Party | Votes | % | ±% |
|---|---|---|---|---|
| Gill Furniss | Lab | 14,087 | 62.4 | +5.9 |
| Steven Winstone | UKIP | 4,497 | 19.9 | –2.2 |
| Shaffaq Mohammed | Lib Dem | 1,385 | 6.1 | +1.6 |
| Spencer Pitfield | Con | 1,267 | 5.6 | –5.4 |
| Christine Gilligan Kubo | Green | 938 | 4.2 | –0.1 |
| Steve Mannion | Yorkshire First | 349 | 1.5 | – |
| Bobby Smith | Give Me Back Elmo | 58 | 0.2 | – |
Sheffield Brightside & Hillsborough 2015 general election result
Held 3rd December 2015, due to the death of Michael Meacher.
| Labour | 62.27% |
| UKIP | 23.32% |
| Conservative | 9.33% |
| Liberal Democrat | 3.68% |
| Green | 0.9% |
| Monster Loony | 0.51% |
| Candidate | Party | Votes | % | ±% |
|---|---|---|---|---|
| Jim McMahon | Lab | 17,209 | 62.27 | +7.49 |
| John Bickley | UKIP | 6,487 | 23.32 | +2.71 |
| James Daly | Con | 2,596 | 9.33 | –9.65 |
| Jane Brophy | Lib Dem | 1,024 | 3.68 | –0.0 |
| Simeon Hart | Green | 249 | 0.90 | –1.05 |
| Sir Oink A-Lot | MRLP | 141 | 0.51 |