How Brown could get my vote
The 'populus' analysis that Brown and Cameron have moved ever-closer together on a left / right axis has been given much word-space; the conclusions are that they're fighting to occupy the same space on the centre ground, where the next election will be decided.
I think this is far too simplistic. The diagram below show why. I will vote for whoever is nearest to me not on a one-dimensional axis but on a two (or even three) dimensional conviction grid. And with both leaders in the same place on the horizontal axis, the vertical axis becomes critical.
Of course, its complicated by the fact that I know that Brown is posturing and his real position is different to his public position but that I don't know where Cameron's real position really lies.
Any leader - even Brown - who moves upwards on the scale will be more strongly assured of my vote, and those of the many of you that I know will place themselves in the upper right hand quadrant. Enough said.