Representation Statistics
The Gallagher Index is a measurement of how closely the proportions of votes cast for each party is reflected in the number of parliamentary seats gained by that party. The resultant disproportionality figure is a percentage - the lower the index, the better the match.
| Election | Disproportionality | Number of Parties in Parliament |
|---|---|---|
| 1946-1993 average | 11.10% | 2.4 |
| 1996 | 4.36% | 6 |
| 1999 | 3.01% | 7 |
| 2002 | 2.53% | 7 |
| 2005 | 1.11% | 8 |
| 2008 | 5.21% | 7 |
| 2011 (preliminary results) | 2.53% | 8 |
The Gallagher index on the provisional election night figures for the 2008 election is 4.06
Read more about this topic: Electoral System Of New Zealand
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