Most Dominant Party:Democrats(1932-1980),Liberals(1935-1984),Tories(1931-1997)

[Beet]

I hate to side with Old School Republican here, but if anything he is too conservative. Between 1916 and 1997, the Tories were in government for 59 out of 81 years, 73% of the time. Further, all but one Labour government during this period ended in disaster. In 1924 they lasted less than a year before being felled by red baiting. In 1929 they came in just in time for the Great Depression. In 1967 they suffered a currency crisis, then lost an election they were supposed to win. And the Callaghan government.. well no more needs to be said. Granted, the Attlee government was a spectacular success despite its failure to sustain itself, but still... The Conservative Party certainly dominated the 20th century United Kingdom.