# Poplar South (UK Parliament constituency)

Poplar South (strictly South Poplar, although this is an unusual form of official name for a borough constituency) was a parliamentary constituency centred on the Poplar district of the East End of London. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom.
The constituency was created for the 1918 general election, and abolished for the 1950 general election. It was then largely replaced by a new Poplar constituency.

## Boundaries

The Borough of Poplar wards of Bromley Central, Bromley South East, Poplar Cubitt Town, Poplar East, Poplar Millwall, Poplar North West, and Poplar West.

## Members of Parliament

| Election | Election | Member | Party |
| | 1918 | Alfred Yeo | Liberal |
| | 1922 | Samuel March | Labour |
| | 1931 | David Adams | Labour |
| | 1942 by-election | William Guy | Labour |
| 1950 | 1950 | constituency abolished: see Poplar | constituency abolished: see Poplar |

## Election results
### Elections in the 1910s

General election 1918: South Poplar :
| Party | Party | Candidate | Votes | % | ±% |
| C | Liberal | Alfred Yeo | 8,571 | 49.4 | |
| | Labour | Samuel March | 4,446 | 25.6 | |
| | Unionist | Wilfrid T. Allen | 4,339 | 25.0 | |
| Majority | Majority | Majority | 4,125 | 23.8 | |
| Turnout | Turnout | Turnout | 36,077 | 48.1 | |
| | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) | Liberal win (new seat) |
| C indicates candidate endorsed by the coalition government. ||||||

### Elections in the 1920s

General election 1922: South Poplar :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Samuel March | 14,484 | 58.8 | +33.2 |
| | National Liberal | Alfred Yeo | 10,146 | 41.2 | New |
| Majority | Majority | Majority | 4,338 | 17.6 | N/A |
| Turnout | Turnout | Turnout | 37,026 | 66.5 | +18.4 |
| | Labour gain from Liberal | Labour gain from Liberal | Swing | +20.7 | |
General election 1923: South Poplar :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Samuel March | 14,537 | 64.8 | +6.0 |
| | Liberal | Harold Heathcote-Williams | 7,899 | 35.2 | −6.0 |
| Majority | Majority | Majority | 6,638 | 29.6 | +12.0 |
| Turnout | Turnout | Turnout | 37,681 | 59.5 | −7.0 |
| | Labour hold | Labour hold | Swing | +6.0 | |
General election 1924: South Poplar :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Samuel March | 16,224 | 62.6 | −2.2 |
| | Liberal | Harold Heathcote-Williams | 9,709 | 37.4 | +2.2 |
| Majority | Majority | Majority | 6,515 | 25.2 | −4.4 |
| Turnout | Turnout | Turnout | 38,336 | 67.6 | +8.1 |
| | Labour hold | Labour hold | Swing | -2.2 | |
General election 1929: South Poplar :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | Samuel March | 19,696 | 64.8 | +2.2 |
| | Liberal | Harold Heathcote-Williams | 7,185 | 23.6 | −13.8 |
| | Unionist | Elliot Marcet Gorst | 3,532 | 11.6 | New |
| Majority | Majority | Majority | 12,511 | 41.2 | +16.0 |
| Turnout | Turnout | Turnout | 47,845 | 63.6 | −4.0 |
| | Labour hold | Labour hold | Swing | +8.0 | |

### Elections in the 1930s

General election 1931: South Poplar :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | David Morgan Adams | 16,253 | 57.6 | −7.2 |
| | Liberal | Herbert Leonard M. Jones | 11,965 | 42.4 | +18.8 |
| Majority | Majority | Majority | 4,288 | 15.2 | −26.0 |
| Turnout | Turnout | Turnout | 48,166 | 58.6 | −5.0 |
| | Labour hold | Labour hold | Swing | -13.0 | |
General election 1935: Poplar, South Poplar :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | David Morgan Adams | 18,715 | 73.2 | +15.6 |
| | Conservative | Diana Spearman | 6,862 | 26.8 | New |
| Majority | Majority | Majority | 11,853 | 46.4 | +31.2 |
| Turnout | Turnout | Turnout | 46,231 | 55.3 | −3.3 |
| | Labour hold | Labour hold | Swing | N/A | |

### Elections in the 1940s

1942 Poplar South by-election :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | William Henry Guy | 3,375 | 86.2 | +13.0 |
| | Christian Socialist | P.H. Figgis | 541 | 13.8 | New |
| Majority | Majority | Majority | 2,834 | 72.4 | −26.0 |
| Turnout | Turnout | Turnout | 3,916 | 8.5 | |
| | Labour hold | Labour hold | Swing | N/A | |
General election 1945: South Poplar :
| Party | Party | Candidate | Votes | % | ±% |
| | Labour | William Henry Guy | 11,620 | 89.2 | +16.0 |
| | National Liberal | Joan Vickers | 1,403 | 10.8 | −16.0 |
| Majority | Majority | Majority | 10,217 | 78.4 | +32.0 |
| Turnout | Turnout | Turnout | 19,667 | 66.2 | +10.9 |
| | Labour hold | Labour hold | Swing | N/A | |