The voting public have long despised "waka-jumping" MPs. Another unfortunate byproduct of MMP - candidates who "coat-tail" into Parliament on the back of a colleague who wins an electorate seat even if their party has not cleared the 5 per cent threshold - has yet to breed quite the same
John Armstrong: Cunliffe's tough stance on coat-tailing could backfire
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David Cunliffe. Photo / APN
But Cunliffe's categorical - his word - refusal to countenance electoral accommodations could end up backfiring very badly for Labour.
For starters, it is political convention that changing electoral law is done by consensus because it is fundamental to the country's democracy. However justified, Cunliffe's promise to speedily scrap the one-electorate-seat threshold cuts right across that convention because National and Act would oppose such legislation.
Of more immediate pertinence, Labour could yet need Internet Mana to secure a majority in the next Parliament. But bringing more MPs into Parliament alongside Hone Harawira will likely require that the new umbrella party's leader hold his Te Tai Tokerau electorate.
If Harawira lost, Internet Mana's party votes would go down the gurgler to the huge disadvantage of the centre-left in what is shaping as a very close contest.
But Cunliffe is now hamstrung. If he drops even the slightest hint - even a coded one - that Labour voters should opt for Internet Maori in Te Tai Tokerau, Cunliffe will be deemed an absolute hypocrite.
Not the kind of label you want to be carrying during an election campaign.