Populus has the Tory lead at three, YouGov at eight

There are polls out tonight from the two firms polling for the Tories, Populus and YouGov, and they have pretty different results. Populus has the Tories on 36, down three from last week, Labour on 33 and the Lib Dems on 21. In the YouGov tracker, the Tories are on 39, Labour are down two to 31 and the Lib Dems are on 20.