A sense of political intoxication: the enthusiasm, the detail, the debate, and the understanding of the issues was unlike anything I had experienced.
Had Blair withdrawn the whip from Jeremy Corbyn, it would probably have been the end of his political career. And ended any chance of taking the leadership himself 19 years later.
The four contenders clash over immigration, benefits cuts, "making excuses" for Vladimir Putin and the shadow of the Iraq war.
Both educated at Oxford and both married to barristers, but beyond that Ed Miliband and Tony Blair are very different Labour leaders.
Getting answers to difficult questions from politicians can be tough. Channel 4 News presents the top 10 'doorstep' interviews from Political Correspondent Michael Crick, a master of the art.
If Tony Blair was ever considered an honest broker as Middle East envoy, it is a title he may well have lost - even if most of what has gone wrong is not his fault.
Ed Miliband is dubbed "two kitchens" after being filmed in one of the kitchens at his north London home, but he's not the first politician to be accused of misleading the voters.