Mexican politics is characterized by a multi-party system, primarily dominated by the Institutional Revolutionary Party (PRI), the National Action Party (PAN), and the Party of the Democratic Revolution (PRD). The country operates as a federal republic, with a president serving as both the head of state and government. Elections are held every six years, and the political landscape has evolved significantly since the end of one-party rule in the early 2000s. Corruption and drug-related violence have been persistent challenges in Mexican politics, impacting governance and public trust. The government has implemented various reforms to address these issues, including efforts to enhance transparency and strengthen law enforcement. Additionally, the rise of new political movements, such as MORENA, reflects changing public sentiments and demands for accountability.