| Election Name: | 1920 South Norfolk by-election |
| Type: | presidential |
| Country: | United Kingdom |
| Previous Election: | South Norfolk (UK Parliament constituency)#Elections in the 1910s |
| Previous Year: | 1918 |
| Next Election: | South Norfolk (UK Parliament constituency)#Elections in the 1920s |
| Next Year: | 1922 |
| Election Date: | 27 July 1920 |
| Candidate1: | Edwards |
| Party1: | Labour Party (UK) |
| Popular Vote1: | 8,594 |
| Percentage1: | 45.7% |
| Candidate2: | Batty |
| Party2: | Coalition Liberal |
| Popular Vote2: | 6,476 |
| Percentage2: | 34.5% |
| Candidate3: | Roberts |
| Party3: | Liberal Party (UK) |
| Popular Vote3: | 3,718 |
| Percentage3: | 19.8% |
| Map Size: | 250px |
| MP | |
| Posttitle: | Subsequent MP |
| Before Election: | Cozens-Hardy |
| Before Party: | Liberal Party (UK) |
| After Election: | Hay |
| After Party: | Unionist Party (UK) |
The 1920 South Norfolk by-election was a by-election held on 27 July 1920 for the British House of Commons constituency of South Norfolk.
The by-election was triggered by the succession to the peerage of the serving Coalition Liberal Member of Parliament (MP), William Cozens-Hardy.
South Norfolk had been a safe Liberal seat since Arthur Soames's victory in the 1898 by-election.
The Liberal vote was now divided. The Coalition Liberal candidate was James Henley Batty, who received the support of the Coalition leaders, David Lloyd George and Bonar Law. He had contested the 1918 general election at Clitheroe, as a Coalition Liberal coming third behind Labour and Unionist. Charles Henry Roberts ran as a Liberal who received the support of H. H. Asquith. He had sat as a Liberal MP before the war. He was elected to Parliament for Lincoln in the 1906 general election and served under Asquith as Under-Secretary of State for India 1914 to 1915 and as Comptroller of the Household from 1915 to 1916. He lost his seat in 1918.
They were opposed by a strong Labour Party candidate, George Edwards, a former agricultural labourer. In 1906 he founded the Eastern Counties Agricultural Labourers & Small Holders Union later known as the National Union of Agricultural and Allied Workers, and became its general secretary. In 1906 he was elected to Norfolk County Council, in 1914 he became a magistrate, and in 1918 he became a county alderman. During the war he served on various committees and was given the OBE. He contested the South Norfolk constituency at the 1918 general election. He won 26% of the votes, losing to the Liberal Party candidate William Cozens-Hardy.
Batty recommending those of his supporters who could not bring themselves to vote for the Coalition to support Edwards instead.[1] A local landowner and Norfolk county councillor, the Earl of Kimberley, endorsed Edwards.
The result was a clear win for Edwards, who picked up around 2,000 votes on a very similar turnout to the general election, and exploited the split in the Liberal vote.
Edwards was defeated in the next election, but won the seat again between 1923 and 1924.