The answer is obvious. Because the rest of them are "all in it togeher", metropolitan.
"OK, I’ll say it out loud. I agree with Nigel. Sorry, I can’t help it. For once, Farage is spot on. The UK’s “winner-takes-all”, first-past-the-post (FPTP) voting system is, to quote the Ukip leader, “totally bankrupt”.
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So why isn’t electoral reform a higher priority for the left? How can any self-styled progressive support an electoral system that denies millions of voters a voice in parliament – no matter how reactionary or regressive, in the case of Ukip, that voice is deemed to be?
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Yet Andy Burnham, the frontrunner for Labour’s top job, is on record dismissing electoral reform as a “peripheral issue”, as a “kind of fringe pursuit for Guardian-reading classes”. It isn’t."
www.theguardian.com/commentisfree/2015/jun/02/nigel-farage-electoral-reform-left-first-past-the-post-proportional-representation