The Liberals averaged 38.7% support in July, up 5.7 points from June and the highest they have recorded going back at least as far as before 2009. It was also their first month of increase since January, and stretches their lead overt the Conservatives to 16 months.
The Conservatives were down 2.9 points, averaging 28.1% support. The New Democrats were down 2.6 points to 21.7%, their lowest result since April 2011.
ThreeHundredEight.com: July 2014 federal polling averages (external - login to view)