The Rushcliffe by-election of 1934 was held on 26 July 1934. The by-election was held due to the resignation of the incumbent Conservative MP, Henry Betterton. It was won by the Conservative candidate Ralph Assheton.
The Liberal Party selected Arthur Thomas Marwood, who had been their candidate in the 1929 General Election. He was a commercial traveller in the grocery trade. He lived locally, in Carlton. He had run a Baptist church.
Marwood contested Derbyshire North East at the 1935 General Election.