On the last night of Tory conference, I walked past a near empty room where a handful of people were dancing to ABBA. It was only 10.15pm, prime time for party faithful and corporate lobbyists wanting to rub shoulders with Tory big beasts. But the sad sight of less than a dozen people grooving to "Gimme, Gimme, Gimme" shows how times have changed. Once one of the most successful political parties in history, the Tories are down and out. Labour are in power, Reform are eating their lunch and