Conservative MPs have seized on David Miliband's decision to quit parliament as evidence the Labour Party is "lurching to the left" under the leadership of his brother.
It's almost as if a memo went out from Conservative Campaign Headquarters:
David Miliband's Resignation Signals Labour 'Lurch To The Left', Claim Tories
David Miliband's Resignation Signals Labour 'Lurch To The Left', Claim Tories