There is a Populus poll in The Times tomorrow which does not appear to cover voting intention, but rather asks the public what they expect they outcome of the next election to be.
The results are:
Conservative overall majority – 55%
Hung Parliament with Conservatives as largest single party – 12%
TOTAL EXPECTING CONSERVATIVES AS LARGEST PARTY – 67%
Labour overall majority – 18%
Hung Parliament with Labour as largest single party – 7%
TOTAL EXPECTING LABOUR AS LARGEST PARTY – 25%
Personally I am astonished that nearly one fifth of people still expect Labour to get a majority, given that it will require the party to lose only 24 seats on a swing of a mere 1.6% in order to fall into Hung Parliament territory.
More details here.