The Colombian government operates as a unitary presidential constitutional republic. It consists of three branches: the executive, led by the President of Colombia; the legislative, which includes a bicameral Congress; and the judicial branch, responsible for interpreting laws. The government is based in Bogotá, the capital city, and is responsible for maintaining order, providing public services, and ensuring the rights of its citizens. Elections in Colombia are held every four years for the presidency and Congress. The Constitution of 1991 established the current political framework, promoting democracy and human rights. Local governments also play a crucial role in administration, allowing for regional representation and governance.