The polling evidence and anecdotal reports from the doorstep suggesting the need for Miliband to do a deal with the SNP is getting cut through to voters has got Tory morale up. Miliband’s claims that he won’t do a deal are widely disbelieved, because voters can see from the polls that would mean he would not be going to Downing Street. Betting on the Tories being the biggest party gets you a 20% return on your money by Friday down at Ladbrokes…