Source: House of Commons Library – UK Election Statistics: 1918-2021

Notes:

• For elections up to 1992, the Speaker of the House of Commons is listed under the party he represented before his appointment. From 1997 the Speaker is listed under ‘Other’.
• 1918 figures include all of Ireland.
• Conservatives figures include Coalition Conservative for 1918; National, National Liberal and National Labour candidates for 1931-1935; National and National Liberal candidates for 1945; National Liberal & Conservative candidates 1945-1970.
• Liberal Democrat figures include Coalition Liberal Party for 1918; National Liberal for 1922; and Independent Liberal for 1931. Figures show Liberal/SDP Alliance vote for 1983-1987 and Liberal Democrat vote from 1992 onwards.