The Tories are still not on course to win the general election outright, two more opinion polls have indicated, pointing to the possibility of a hung Parliament.
An ICM survey for the the News of the World put the advantage at six points and research by YouGov for the Sunday Times suggested David Cameron enjoyed a seven-point advantage.
But the polls - both carried out in the middle of this week - gave contrasting signals on the party's trajectory.
One showed the Tory lead shrinking by three points, while the other suggested it had widened by the same margin.
Neither, however, would translate into an overall majority for the Conservatives.