This book analyses a middle position between single enumerations in a regular federal-like and a regular autonomy-like distribution of legislative powers by examining constitutional legislation in three countries (Canada, Denmark and Finland) that have established separate enumerations for the national level and the sub-state level. The sub-state level consists of provinces in Canada, the Faroe Islands in Denmark and the à land Islands in Finland. The book provides interpretations of the competence line based on double enumeration between the national parliament and the sub-state entities, where relevant, on the basis of the travaux preparatoires of the fundamental norms on which the arrangements are based, judicial or quasi-judicial resolutions of competence problems, and relevant doctrine and literature.