In the 1950s, politicians cared little for what Churchill called the 'idiot's lantern'. Now television is central to a political leader's image and his chances of winning an election. This is the story of how politicians abandoned the soapbox for the studio - from the early performances of the two Harolds, Macmillan and Wilson, through the TV campaigns of Margaret Thatcher to the spin-doctored presentation of Tony Blair. Has television finally reduced our politicians to actors spouting soundbites? With six decades of fascinating archive from television's longest running current affairs programme - Panorama - this is the story of how television has changed British politics.