In what ways did the nature of party support, and the attitudes of the electorate to the parties, change in the 1970s? How volatile was the British electorate? Was the two-party system breaking down? What were the causes of the Conservative triumph in 1979? Basing their work on national surveys conducted by the British Election Study at the University of Essex after the elections of February and October 1974 and May 1979, Bo S rlvik and Ivor Crewe...