UK Elections: Votes v. Seats via the Westminster System
1979 Election
Party	Vote as % of Total Electorate	Seats in HoC as % of Total Seats
Conservative	33	53.5
Labour	28	42.3
2005 Election
Party	Vote as % of Total Electorate	Seats in HoC as % of Total Seats
Conservative	19.9	30.7
Labour	21.6	54.9
The electorate includes those eligible to vote who did not cast ballots.