1. Dahl's Concept of Participation and Contestation
Granting each a different source of power and legitimacy and inducing the Executive and Legislative to both compete and co-operate for influence over policy, lessens the possibility that any of the three branches might unbalance the structure. ... In contrast to this Britain's unitary constitution centralises power both in the Westminster Parliament in London, with local authorities being clearly subordinate to the national government, and in the Executive, which dominates the Legislative, allowing the Party that controls parliament to make or unmake any law. ...