File photo dated 04/10/12 of Labour leader Ed Miliband and deputy leader Harriet Harman as Harman will warn trade union leaders tonight that a bitter battle over funding reforms could help keep David ... more 
File photo dated 04/10/12 of Labour leader Ed Miliband and deputy leader Harriet Harman as Harman will warn trade union leaders tonight that a bitter battle over funding reforms could help keep David Cameron in Downing Street. less 
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Sun, Sep 8, 2013 4:52 PM EDT