By Tim Montgomerie
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Is it his high spending, high taxing, union-friendly politics? The Red Ed factor.
Or is it the fact he just seems a bit weird and not ready to be a prime minister? The Odd Ed factor.
YouGov asked 2,333 voters last weekend and it now seems that Odd Ed is the clear winner (or should that be loser?).
39% say Odd Ed is the Labour leader’s biggest problem and only 14% say it’s Red Ed.
28% say neither factor is an obstacle for Mr Miliband.