The Liberals have hit yet another record high on the Nanos Party Power Index, according to tracking released on Nov. 18.

The index used by Nanos Research uses public opinion measures to give each party a composite score from 0 to 100. A 0 means the party has no brand strength, while 100 means the party has maximum brand strength.

The most recent index, which is based on tracking ending on Nov. 13, shows:

The Liberals with 68.6 out of a possible 100 points, up 2.4 points since tracking released on Nov. 11, when the party had 66.2 points

The NDP with 47.8 points, down .9 points since the last tracking, when the party had 48.7 points

The Conservatives with 44.9 points, down 1.6 points since the last tracking, when the party had 46.5 points

The Greens with 31.6 points , up .5 points since the last tracking, when the party had 31.1 points

In Quebec, the Bloc Quebecois scored 25.3 points, down 3.9 points since the last tracking, when the party had 29.2 points

The Nanos Party Power Index measures federal party brands based on four public opinion questions, including:

A ballot measure question that asks respondents to name their first and second vote preferences

A question on whether the respondent would consider voting for a party

A question that asks respondents to rank which federal party leader would be their preferred prime minister and which leader would be their second choice

A leadership question on whether respondents believe each party leader has the qualities of a good leader

Tracking methodology

A national dual-frame (land and cell) random telephone survey is conducted weekly by Nanos Research using live agents.

The weekly tracking figures are based on a four-week rolling sample composed of 1,000 interviews. To update the tracking, a new week of 250 interviews is added and the oldest week dropped. The margin of error for a survey of 1,000 respondents is ±3.1 percentage points, 19 times out of 20.

Follow @niknanos on Twitter

Detailed tracking from Nanos Research