A referendum on introducing the alternative vote (av) for parliamentary elections was among the largest concessions Mr Clegg gained from David Cameron in negotiations over their power-sharing deal.

克莱格从与大卫·卡梅隆商讨分享权力的交易时得到的最大让步之一就是，举行一个是否对议会选举进行备择性选举的公投。

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Asked whether the coalition would change after the vote, Mr Clegg said that during its first year, in which difficult spending decisions had been made, "real collective discipline" had been required.

BBC: AV referendum: Cameron 'not responsible for No to AV'

But she predicts that even those impressed by Nick Clegg are likely to vote for Labour to keep the Tories out.

ECONOMIST: The defence vote in Portsmouth: England expects | The

The Conservatives regard the existing pattern of seats as skewed against them, and changing that bias would be an important boost to their hopes at the next election - but after the defeat of Lords reform at the hands of Tory backbenchers, Nick Clegg and his MPs will now vote against, in revenge.

BBC: Numbers game