Tactical Voting in Great Britain in 1983 and 1987: An Alternative Approach

The analyses presented in this note have extended earlier work on tactical voting in Great Britain by looking at variations between constituencies in the flow-of-the-vote matrix that are consistent with hypotheses of tactical voting. They have suggested that about 4 per cent of the British electorate voted tactically in 1983, as did nearly 6 per cent in 1987. The volume of tactical voting was greater in Conservative-held than in Labour-held seats, and in both was greater the more marginal the seat. In general, the opposition party with the greatest chance of unseating the incumbent, as suggested by the result of the previous election, gained from the tactical voting process, and there is evidence that greater campaign effort, as indexed by constituency spending, helped them in this.