This article describes the party affiliations of the leaders of each member-state represented in the European Council during the year 2006. The list below gives the political party that each head of government, or head of state, belongs to at the national level, as well as the European political alliance to which that national party belongs. The states are listed from most to least populous. More populous states have greater influence in the council, in accordance with the system of Qualified Majority Voting.