Uniform national swing

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Uniform national swing, or UNS is a system for translating opinion polls, which give overall vote proportions, to expected eventual parliamentary seats in a constituency based first past the post system, as in the UK general elections. Under the uniform national swing, changes in the vote proportions (swing) since the previous election are assumed to be constant across all constituencies. [1] By applying this change to the previous per-constituency based vote proportions, a prediction for which party would have the most votes in each constituency may be made, which is then counted and totalled for a final seat count.

Alternative methods exist, such as the proportional national swing system. According to Peter Kellner, UNS has a mixed record of success at predicting seat counts in the UK. [2]

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In the run-up to the general election of 2010, several polling organisations carried out opinion polling in regards to voting intention in Great Britain. Results of such polls are displayed below.

Swing, in the politics of the United Kingdom, is a number used as an indication of the scale of voter change between two political parties. It originated as a mathematical calculation for comparing the results of two Parliamentary constituencies. The UK uses a first-past-the-post voting system. The swing is the percentage of voter support minus the comparative percentage of voter support corresponding to the same electorate or demographic.

In the run up to the general election of 2005, several polling organisations carried out opinion polling in regards to voting intention in Great Britain. Results of such polls are displayed below.

In the run-up to the general election on 8 June 2017, various organisations carried out opinion polling to gauge voting intentions. Results of such polls are displayed in this article. Most of the polling companies listed are members of the British Polling Council (BPC) and abide by its disclosure rules.

Opinion polling for the 2024 United Kingdom general election was carried out by various organisations to gauge voting intention. Most of the polling companies listed are members of the British Polling Council (BPC) and abide by its disclosure rules. The opinion polls listed range from the previous election on 12 December 2019 to the election on Thursday, 4 July 2024.

References

  1. "Predicting Regional Swing". ElectoralCalculus. Retrieved 31 December 2024.
  2. Keller, Peter. "Uniform swing, RIP | YouGov". YouGov UK. Retrieved 31 December 2024.