1939 Monmouth by-election
|Labour||Michael Mackintosh Foot||13,454||36.6||+1.6|
The Conservative candidate was 55-year-old Leslie Pym, who had not had previously contested a parliamentary election.
The Labour Party candidate at the 1935 general election had been 22-year-old Michael Foot, who later became Leader of the Labour Party. Foot did not contest the by-election, when the Labour candidate was F.R. Hancock, who had been unsuccessful in Salisbury at the 1929 general election and at a by-election in 1931. He had also been an unsuccessful candidate in Lewes at the 1931 and 1935 general elections. He was also a Quaker and thus opposed to all war.
On a slightly reduced turnout, Pym held the seat for the Conservatives, with a reduced but still large majority of 5,815.
|Labour||Frank Rivers Hancock||11,543||39.9||+3.3|
|Labour||A. B. L. Oakley||20,543||48.1||+8.2|
Pym was re-elected at the 1945 general election, but died five days later.