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In 2007, the UK Labour Party held a deputy leadership election to succeed John Prescott. Harriet Harman was the eventual winner with 50.43% of the vote, whilst Alan Johnson (the favourite to win) was second with 49.56% of the vote. It was extremely close between the two and could have, quite easily, gone to Johnson.

My question is - if less than 1% of the voters decided that Johnson would be more worth their second preference than Harman - what would have been the consequences for Labour going into the 2010 general election and after the inevitable loss?
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