A fairly simple challenge: With a POD of May the 2nd 1997, have the Conservatives win the 2001 general election (or 2002, if Blair decides to wait until Parliament runs its course).
I'm not sure about this - aside from Ken Clarke (under whom the Tories certainly wouldn't win back power, given the infighting that his leadership would cause), I can't see any Conservative leader opposing the War on Terror pre-Iraq. And, speaking of which, prior to Iraq the War on Terror was on the whole popular across the Western world, who felt a large degree of sympathy with the US, and so I'd see taking a stance against the War in Afghanistan backfiring more than anything else.Blair waits till 2002 and tries to do a Maggie T great wartime leader impression. Labour big up the war on terror. The Tories surprise everyone by backing the Stop the War Coalition. This erodes Labour support in some rather safe Labour voting demographics like the young. At just the right time the dodgy dossier is revealed and the Labour campaign never recovers. It's not going to be a landslide but it's just enough to oust Blair and co.
Personally, I think that Michael Howard would've been the best candidate in 1997 to achieve that. So perhaps the Hague-Howard Pact holding could be an appropriate point of divergence?The 2000 Fuel Protests could get really out of hand coupled with a worse Ecclestone scandal. But you would need an amazing Tory leader to unify and detoxify the party in so short a time.