Frankly, I don't think the Tories could win anything in 1997. The Country was exhausted, and NEEDED something different. Its a longshot, but with Labour in total disrepair, and the Tories practically walking corpses, but the Lib dems, provided they had strong leadership, might make an impressive play.
I doubt even then they'd win, but they might form a Coalition government with Labour, and THAT would be interesting. Of course, this sounds ASB, but really 1997 to me seems alot like 2010 is shaping up to be- Crap Conservatives and a Leaderless Labour.