PM clearly hopes to rewrite the narrative with shock appointment, but will it shift the dial with voters?
Just five weeks ago, Rishi Sunak pledged to be the candidate of change, telling activists at the Conservative party conference that he would shake up three decades of political consensus.
Instead, he has brought back David Cameron, the former prime minister who was in charge for six of those 30 years and who, through Brexit, ushered in the biggest schism in British politics for a generation.
