Black had been Liberal MP for the seat of Banffshire since the 1900 General Election. The seat had been Liberal since they gained it in 1837. They had easily held the seat at the last election, with an increased majority;
^Craig, F.W.S. (1987). Chronology of British Parliamentary By-elections 1833–1987. Chichester: Parliamentary Research Services. p. 101.
^"Election Intelligence. Banffshire". The Times. London. 31 December 1906. p. 9.
^ abCraig, F. W. S. (1989) [1974]. British parliamentary election results 1885–1918 (2nd ed.). Chichester: Parliamentary Research Services. p. 518. ISBN0-900178-27-2.