If you want to know why all the recent talk of some kind of Tory revival is bunkum, have a look at the Times' latest Populus poll. As Peter Riddell writes:

The Conservative label is undermining the party’s ability to sell its policies on immigration to swing or floating voters...

The poll, undertaken last weekend, shows that Conservative policy is more popular than Labour’s but the Tory label results in a big drop in support, the implication being that the Tory brand is not appealing.

...Populus divided the sample into two to see the impact of presenting policies without attributing them to one or other of the main parties. Making the Tory link explicit makes a big difference. Net agreement (agree minus disagree) runs at 55 per cent among all voters when the Tory link is not mentioned. But this drops to 43 per cent when the policy is attributed to the Conservatives.

Net support for the Tory approach among swing or floating voters drops from 57 to 41 per cent when the Tory link is made known. Labour voters also become much less supportive of the Tory approach, with net agreement down from 50 to 29 per cent. This more than offsets the rise in net agreement among Tory voters from 67 to 87 per cent.