# Years Size Links
Con 1945–2017 61.1%
IN 1945–2017 1.2%
Lab 1945–2017 63.4%
Lib 1945–2017 9.8%
Other minor parties 1945–2017 2.0%
SNP 1970–2017 8.6%
U 1970–2017 2.2%