'Quasi-federal' describes a system that is not strictly federal (like the USA) nor strictly unitary (like the UK). India exhibits federal features like division of powers, written constitution, independent judiciary, but also unitary features like a strong centre, single citizenship, single constitution, integrated judiciary, all India services, and emergency provisions. Judicial Review is a mechanism for upholding the supremacy of the constitution and checking the powers of the legislature and executive, a characteristic present in many democratic systems.