Does one vote FOR a party or AGAINST another? Personally, I'd never vote Labour, whilst I find some aspects of the Conervative party annoying, I find the hypocracy of the champagne socialists worse.
Given the economic situation left behind in 2010, Labour must have been relieved not to win, they would have been left to clear up their own mess. As things are, they'll probably get back in in 2015 and be able to blame everything on the Tories attempts to deal with their, Laboiur's, mess.
No government in any country coming to power on a change of government post 2008 could expect an easy ride, look at the US.
The "spare room tax" isn't a tax, it's an attempt to make social housing available to those who need it, my late mother had a 3 bedroom house and her local authority refused to move her into a smaller home when she asked.