"which is why they want PR as it gives more power to the smaller parties"
Maybe I missed something, but from the current results: Conservatives got 36% of the vote, but have 47% of the seats, Labour got 29% of the vote and have 40% of the seats and the Lib Dems got 23% of the vote, but only get 9% of the seats.
I think it would be fairer to say they want PR because it leads to a more representative distribution of power, the top three parties *should* have had 234, 188 and 143 seats.
It's just as bad at the other end of the scale, the DUP had 0.6% of the vote, but get 1.2% of the seats (8), wheras the SNP got 1.7%, but have 1% of the seats (6) - how can a fair system allow the party with 1/3 of the votes of another party end up with more seats?
Generally Labour and the Conservatives have the most to lose if the system changes, but we're in an interesting situation now, Labour (or GB at any rate) seem to want to cling onto power by any means necessary, so they're possibly ready to deal. Selling their future for a short-term gain? Surely not! (Don't mention the gold reserves; I did it once, but I think I got away with it.)