sentences:  He was re-elected at the next seven general elections, serving as the MP for the constituency for 35 years before losing his seat at the 1970 general election to Donald Stewart of the Scottish National Party (SNP).In 1972, Macmillan was expelled from the Labour Party after disagreement over the selection of his replacement as Labour candidate, Andrew Wilson.Macmillan stood as a United Labour Party candidate at the February 1974 general election, but finished in fourth place, polling only 6.8% of the vote while the SNP substantially increased their majority.