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GLASGOW, SCOTLAND - JANUARY 29: Ed Miliband, Leader of the Labour Party and Jim Murphy, Leader of the Scottish Labour Party meet apprentice tradespeople during a visit to the Queenslie Training Centre on January 29, 2015 in Glasgow Scotland. During his visit to the city Labour leader Ed Miliband has promise a "Home Rule bill for Scotland" if Labour wins the general election. (Photo by Mark Runnacles/Getty Images)

GLASGOW, SCOTLAND - JANUARY 29: Ed Miliband, Leader of the Labour Party and Jim Murphy, Leader of the Scottish Labour Party meet apprentice tradespeople during a visit to the Queenslie Training Centre on January 29, 2015 in Glasgow Scotland. During his visit to the city Labour leader Ed Miliband has promise a "Home Rule bill for Scotland" if Labour wins the general election. (Photo by Mark Runnacles/Getty Images)