Original sentence: It appears to be largely discarded once sufficient results have been announced in favour of more sophisticated analysis.It is used to present a simplified view of pre-election opinion polling and then of newly announced results on election night, filling the long periods between results with hypothetical possibilities.The swingometer, by its nature, is best suited to two-party systems and can produce a bias against a third party because of the over-simplification it appears to show
Edited sentence: It is essentially a harmless device used to fill long periods between results and appears to be largely discarded once sufficient results have been announced in favour of more sophisticated analysis