Education
Dempsey was educated at Holy Family School, Mossend, the Company-operative College in Loughborough, and at the National Council of Labour Colleges.
Dempsey was educated at Holy Family School, Mossend, the Company-operative College in Loughborough, and at the National Council of Labour Colleges.
He was a clerk with a haulage firm and a councillor on Lanarkshire County Council from 1945. He later worked as a lecturer on political economy and a writer on local government. His successor in the resulting by-election was Tom Clarke.
42nd United Kingdom Parliament. 43rd United Kingdom Parliament. 44th United Kingdom Parliament.
45th United Kingdom Parliament.
46th United Kingdom Parliament. 47th United Kingdom Parliament.
48th United Kingdom Parliament]
Dempsey was Member of Parliament for Coatbridge and Airdrie from 1959 until he died in office in 1982 aged 65.