Government effectiveness during each prime minister's tenure

Every prime minister since 1991, ranked by how the government effectiveness changed from their first day in office. Politare shows what happened during a tenure; it does not claim the office-holder caused it.

#	Prime minister	In office	Total	Per year	Chart
1	Stephen Harper	6 Feb 2006 – 4 Nov 2015	−0.5 points 2005 → 2015	0.0 points/yr
2	Justin Trudeau	4 Nov 2015 – 14 Mar 2025	−2.6 points 2015 → 2024	−0.3 points/yr

Sorted by total, highest first. Every row is indexed to the last count complete before the first day in office ("from" marks a start that had to move because that count had no data, or because the period cut it); Levels are per cent changes, rates are differences in points; "per year" compounds levels and divides rates. Tenures with under 12 months, or under three observations, are left out. points, 0 to 100, higher is better · World Bank, Worldwide Governance Indicators (GOV_WGI_GE.SC): perceptions of the quality of public services, the civil service and of policy-making, a score from 0 to 100 with its 90 % interval · Canada data · as of Sep 2026.