<p>In the run-up to the general election of May 2010 it was universally acknowledged that whatever the outcome, this vote would start a fresh chapter in British political history. But no one anticipated just how fresh that chapter would be - Twists and turns made it an election like no other. David Cameron launched the Tories' poster campaign with an unblemished photograph of himself - and it became the most parodied image of the election. Nick C...