Under an arrangement of this type, «sovereignty» is shared between different tiers of government, each with its own respective spheres of operation. (blog.politics.ox.ac.uk)
There are numerous tiers of government in the UK for which voters are regularly asked to cast their ballots, including local councils, directly elected mayors, police and crime commissioners, national assemblies and parliaments.The first past the post system for local councils in England and Wales as well as Westminster also means that the nuances of local politics can vary significantly from place to place. (democraticdashboard.com)
He called for an urgent review to enable other tiers of government realise their potentials and accelerate growth and development. (nigeriapoliticsonline.com)