The prospects for a stable and efficient government are not determined by the electoral system alone, but the results a system produces can contribute to stability in a number of important respects.
The key questions are
- whether voters perceive the system to be fair,
- whether government can efficiently enact legislation and govern, and
- whether the system avoids discriminating against particular parties or interest groups.
The perception of whether results are fair or not varies widely from country to country. Twice in the United Kingdom (UK) (in 1951 and 1974) the party winning the most votes in the country as a whole won fewer seats than its opponents, but this was considered more a quirk of a basically sound system than an outright unfairness which should be reversed. Conversely, similar results in New Zealand in 1978 and 1981, in which the National Party retained office despite winning fewer votes than the Labour opposition, are credited as starting the reform movement which led to a change of electoral system.
The question whether the government of the day can enact legislation efficiently is partly linked to whether it can assemble a working majority in the legislature, and this in turn is linked to the electoral system. As a general rule of thumb, plurality/majority electoral systems are more likely to produce legislatures where one party can outvote the combined opposition, while PR systems are more likely to give rise to coalition governments. Nevertheless, it has to be remembered that PR systems can also produce single-party majorities, and plurality/majority systems can leave no one party with a working majority. Much depends on the structure of the party system and the nature of the society itself.
Finally, the system should, as far as possible, act in an electorally neutral manner towards all parties and candidates; it should not openly discriminate against any political grouping. The perception that electoral
politics in a democracy is an uneven playing field is a sign that the political order is weak and that instability may not be far around the corner. A dramatic example of this was the 1998 election in Lesotho, in which the Lesotho Congress for Democracy won every seat in the legislature with only 60 per cent of the votes under an FPTP system. The public unrest that followed, culminating in a request for military intervention in the country by the Southern African Development Community, demonstrated that such a result was not merely unfair but also dangerous, and the electoral system was consequently changed for future elections.
