Electoral swing is a way of comparing the performance of parties at elections. This note shows how to calculate swing using examples from the 2010 General Election and gives detail of general election swings since 1950 and record by-election swings.
Electoral swing (187 KB , PDF)
Electoral swing is a way of comparing the results of two elections in the same area. This note shows how to calculate swing using examples from the 2010 General Election and explains the limitations of swing as an analytical tool. It gives detail of general election swings since 1950 and the largest constituency swings at the 2010 election as well as record by-election swings since 1945.
Electoral swing (187 KB , PDF)
Parliamentary constituency boundaries are reviewed periodically by independent Boundary Commissions. This House of Commons Library briefing summarises the current rules and procedures for boundary changes and how they have changed over time. It also gives an overview how the number of MPs has reached the current level of 650.
Constituencies are reviewed periodically by independent Boundary Commissions, one for each part of the UK. This briefing outlines how the public can get involved in the consultation stages.
A briefing paper on the Anglo-Irish Treaty, 1921
