Under AV, voters rank candidates: if nobody gains a majority of first preferences, the second preferences of the least popular candidates are redistributed until someone crosses the 50% line.

在新办法下，选民对竞选人评级：如果第一优先级的候选人都没有得到过半的支持，那么就排在末尾的候选人得的票按第二优先级分给剩下的候选人，直至有人获得过半的票数。

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It added that those figures were broadly in line with the costs, per voter, of the Welsh Assembly and AV referendums in 2011.

BBC: Sign saying 18 September