Cameron doesn't look and sound like a person who is the next PM in waiting? For the last 2 weeks they have been panicking. All their 'good' news on the economy has not washed with people whose lives are not getting better. So they resort to type when things aren't going well. Scaremongering, hence, the constant SNP baiting. Cameron's pathetic attempt to 'show' he meant 'business' was the sound of a man who is sinking. UKIP will take votes off the Tories and this will effect them in loads of seats.
I reckon the Tories will win around 250 and Labour 280-290. What happens then with the SNP and Labour will be interesting.
The LD will not do as well as the last election, they are not doing to well in their 'traditional' strongholds. UKIP will take votes off them in the South West. Alexander's release of what the Tories intended/are intending to do to welfare, seems to me an indication that Clegg/Alexander are getting desperate and want to undermine the Tories. Because I think the LD are getting it in the neck from their own supporters, who on the doorstep are being told they should never have backed the Tories and are sensing a shift to Labour and want to creep their way into a 'grand' coalition'.