Labour leadership blocked Harriet Harman from shortlist for Halifax seat . List agreed by ad-hoc three-strong committee chaired by Karie Murphy . Given Instructions by Ed Miliband to block the Unite candidate at all costs . Unite general secretary Len McCluskey enraged by actions of Miliband and Harman .
Labour leadership blocked Karie Murphy from shortlist for Halifax seat . List agreed by ad-hoc three-strong committee chaired by Harriet Harman . Given Instructions by Ed Miliband to block the Unite candidate at all costs . Unite general secretary Len McCluskey enraged by actions of Miliband and Harman .