YouGov and Harris show 10 point leads

Tonight's YouGov poll has topline figures of CON 40%(nc), LAB 30%(-1), LDEM 20%(+2). The Conservatives end the week with the same lead they went into it with, and still on the 40% figure.

While it is not confirmed yet, there is also supposed to be a Harris poll in the Daily Mail tomorrow that also shows a 10 point lead, with topline figures of CON 37%(nc), LAB 27%(-1), LDEM 22%(+2). We've already had one Harris poll today in the Metro, but it's fieldwork was three days old - presumably the new one will turn out to have been done more recently.

UPDATE: The Harris poll is confirmed here - the fieldwork was done on Wednesday and Thursday.