The 1942 Llandaff and Barry by-election was held on 10 June 1942. The by-election was held due to the death of the incumbent Conservative MP, Patrick Munro. It was won by the Conservative candidate Cyril Lakin.[1]
^Craig, F. W. S. (1969). British parliamentary election results 1918-1949 (1st ed.). Glasgow: Political Reference Publications. ISBN0-900178-019. Page 559