Now, I'm frequently surprised at how popular the elder Miliband remains in Labour circles. But - after the failed coup of last year, the banana and Heseltine moments, and that disastrous trip to India, among other embarrassments - I'd assumed that that popularity wouldn't stretch to more general voters, and that, say, Alan Johnson would do more for Labour's chances. Maybe not, it seems.
I suspect the question preying on a few Labour minds this morning will be whether Miliband really does represent their future. Or whether these latest findings are all down to name recogntion.