 In 1950 , Clement Attlee , the Labour Prime Minister , called a general election . Dunglass was invited to stand once again as Unionist candidate for Lanark . Having been disgusted at personal attacks during the 1945 campaign by Tom Steele , his Labour opponent , Dunglass did not scruple to remind the voters of Lanark that Steele had warmly thanked the Communist Party and its members for helping him take the seat from the Unionists . By 1950 , with the Cold War at its height , Steele 's association with the communists was a crucial electoral liability . Dunglass regained the seat with one of the smallest majorities in any British constituency : 19 @,@ 890 to Labour 's 19 @,@ 205 . Labour narrowly won the general election , with a majority of five . 
