I predicted the 65% figure for Milliband before even opening the tab. I guess most of this forums US D avatars voted EdMil and Labour because they're to the left of most Dem supporters, who would probably go Clegg or Cameron. I can see most GOP going Farage.
Even if I were more to the center, Cameron's policies have clearly been a colossal failure. And Nick Clegg is an idiot. Farage is, of course, a crypto-fascist. So Labour is the only sensible option.
And even setting aside policy differences (which are, as you pointed out, total failure in their own right) Cameron as a leader has been completely awful and uninspiring as well. He's shown no ability to lead his own party, let alone a coalition or an entire country. I can't imagine how anyone who isn't just a complete hack/demagogue could deny that Labour is basically the least offensive option at this point, even if Ed is completely milquetoast.
Cameron just isn't an effective leader of his party, but one has to ask that if every leader since Major has run into the same problems, is the Conservative Party of today just simply unleadable?