After seven weeks of registering a gain in the Nanos Party Power Index the Conservatives did not improve their score this week.

The Index Score for the Liberals registered at 56 points out of 100, the Conservatives were at 53 points, the NDP at 51 points, the Green Party at 31 points and the BQ (Quebec only) at 27 points.

The Nanos Party Power Index methodology is comprised of a basket of political goods that includes ballot preferences, accessible voters, preferred PM views and evaluations of the leaders. It is modeled similar to a standard confidence index.

On the preferred Prime Minister measure, Conservatives Leader Stephen Harper was the choice of 32 per cent of Canadians followed by Liberal Leader Justin Trudeau at 29 per cent, NDP Leader Thomas Mulcair at 20 per cent, Green Leader Elizabeth May at three per cent and 14 per cent were unsure.

A series of independent questions were asked to gauge the accessible voters for each federal party. The Liberals have the largest potential upside with 55 per cent of Canadians who would consider voting Liberal.

Forty-four per cent of Canadians would consider voting for the federal NDP, 42 per cent would consider voting for the Conservatives, 27 per cent of Canadians would consider voting Green while in Quebec 35 per cent of voters would consider voting the BQ.

Also of note, concerns about war/terrorism/security have currently displaced healthcare as the second most important unprompted issue of concern after jobs.