Grantham was a Parliamentary constituency in Lincolnshire, England.
[1] The constituency was based on Grantham, a market town on the River Witham.
Mellor was appointed Judge Advocate General of the Armed Forces, requiring a by-election.
The political parties had been making preparations for an election to take place and by the Autumn of 1939, the following candidates had been selected; Craig, F. W. S. (1983).
British parliamentary election results 1918–1949 (3 ed.).