Saint Kitts and Nevis, officially known as the Federation of Saint Christopher and Nevis, is a dual-island nation located in the Caribbean. It operates as a federal parliamentary democracy and a constitutional monarchy within the Commonwealth. The political structure of Saint Kitts and Nevis is defined by its constitution, which was adopted in 1983.

At the top of the political structure is the Monarch of Saint Kitts and Nevis, who serves as the head of state. The Monarch is the ceremonial and symbolic representative of the country and is represented locally by the Governor-General. The Governor-General performs constitutional and ceremonial duties on behalf of the Monarch.

The executive branch is headed by the Prime Minister, who is the head of government. The Prime Minister is the leader of the majority party or coalition in the National Assembly and is appointed by the Governor-General. The Prime Minister and the Cabinet are responsible for the day-to-day administration and implementation of policies.

The legislative branch of Saint Kitts and Nevis is a unicameral institution called the National Assembly. It consists of 14 members, 11 of whom are elected representatives (known as Members of Parliament) and three of whom are appointed senators. The Members of Parliament are elected through general elections for a five-year term. The National Assembly is responsible for making laws, approving the national budget, and providing oversight of the executive branch.

Saint Kitts and Nevis has an independent judiciary, which is responsible for interpreting and applying laws, ensuring justice, and protecting the rights of individuals. The Eastern Caribbean Supreme Court serves as the highest court of appeal in the country, with its decisions being final and binding.

Political parties in Saint Kitts and Nevis play a significant role in the political landscape. The two major political parties are the Saint Kitts and Nevis Labour Party (SKNLP) and the People’s Action Movement (PAM), although other parties have also contested elections.

Saint Kitts and Nevis has a history of political stability and peaceful transitions of power. The country has made efforts to promote sustainable development, social welfare, and economic diversification, including through initiatives such as the Citizenship by Investment Program.  Overall, the political structure of Saint Kitts and Nevis is characterized by a federal parliamentary democracy and a constitutional monarchy. The country holds regular elections, allowing citizens to participate in the democratic process and choose their representatives at various levels of government.