Gut feeling is that if Cameron were to rid his party of the UKIP tendency and promote a few more Lib Dem policies, he'd stand a chance of pulling in a few more centre votes.
Perhaps its what happens in the last 3 months of the 5 year spell, that counts, though...and what role Theresa May plays.
If the Tories can place the blame on Labour for the shambles that the NHS is becoming under their stewardship, then they'll probably get in again. Presumably Hunt's cyncal attempt to shift the blame to Labour for failing hospitals is their new plan to do this. Until this year I've been attended to promptly for a test I've taken every year since 2008. This year I received a letter inviting me to ring for an appointment, I duly rang and was told there were no appointments available. They'd let me know when there were, this was a month ago - I'm still waiting. My son who's case is much more serious than mine is getting similar treatment. I went to my GP and she informed me that appointments have been farmed out to an organisation similar to "Ticketmaster!" So much for the NHS being safe in Cameron's hands.