QBS is an electoral system for use whenever an electorate is electing more than one person. In a general election, it should be used in multi-member constituencies of about 5 seats, if need be with a regional/national top-up.
QBS consists of a quota element, added to an MBC. In a 5-seater constituency, a quota is one sixth of the valid vote, plus 1.
The ballot paper looks something like this.
The count proceeds in stages:
Stage I: if any candidate gains a quota of 1st preferences, he/she is deemed elected.
Stage II: if any pair of candidates gains 2 quotas, both candidates are deemed elected.
Stage III: if any triplet of candidates gains 3 quotas, all three candidates are deemed elected.
Stage IV: if any triplet of candidates gain 2 quotas, the 2 candidates with the highest mbc scores are deemed elected.
Then if seats are still to be filled:
Stage V: if any pair of candidates gains a quota, the candidate with the higher MBC score is deemed elected.
Stage VI: if any triplet of candidates gains the quota , the candidate with the highest MBC score is deemed elected.
And finally, if seats still remain to be filled
Stage VII: those candidates with the highest MBC scores are deemed elected.
Last updated on March 21, 2013 by Deborda