Politics of the Dominican Republic takes place in a framework of a presidential representative democratic republic, whereby the President of the Dominican Republic is both head of state and head of government, and of a pluriform multi-party system. Executive power is exercised by the government. Legislative power is vested in both the government and the two chambers of the National Congress. The Judiciary is independent of the executive and the legislature.

The President is Leonel Antonio Fernández Reyna. He took office on 16 August 2004. The Vice President is Rafael Albuquerque de Castro (since 16 August 2004). The president is both the Chief of State and the head of government. The president appoints the cabinet, executes laws passed by the legislative branch, and is commander in chief of the armed forces.The President and Vice President are elected on the same ticket by popular vote for four-year terms, elections are held in years evenly divisible by four.

The Dominican Republic has a multi-party political system with national elections every four years. In two rounds of presidential elections in 1996, nearly 80% of eligible Dominican voters went to the polls. The leading parties in 1994 were the PRSC, linked to the International Christian Democratic political movement, whose candidate was President Joaquín Balaguer; the PRD, affiliated with the Socialist International, whose candidate was José Francisco Peña Gómez; and the Dominican Liberation Party (PLD), whose candidate was former President Juan Bosch.

In the 1994 elections, international observers noted many irregularities in the voter lists, and the opposition PRD
immediately charged the Central Electoral Board and the PRSC with fraud. A Verification Commission appointed by the Central Electoral Board, however, did not accept the PRD's charges. By all estimates, total disenfranchised voters far exceeded the 22,281-vote margin of victory in favor of President Balaguer on 2 August 1994.

Following an intense period of political activity, the competing political parties signed a Pact for Democracy on 10 August, reducing President Balaguer's term of office from 4 to 2 years, setting early elections, and reforming the constitution. A new Central Electoral Board was named to work on electoral reform. The main candidates in 1996 were Vice President Jacinto Peynado (PRSC), José Francisco Peña Gómez (PRD), and Leonel Fernández (PLD).

Domestic and international observers saw the 1996 election as transparent and fair. After the first round in which Jacinto Peynado (PRSC) was eliminated, the PRSC with Joaquín Balaguer endorsed Leonel Fernandez (PLD). Results in the second round, 45 days later on 30 June, were tabulated quickly, and although the victory margin was narrow (1.5%), it was never questioned. The transition from incumbent administration to incoming administration was smooth and ushered in a new, modern era in Dominican political life.

Fernández political agenda was one of economic and judicial reform. He helped enhance Dominican participation in hemispheric affairs, such as the Organization of American States and the follow up to the Miami Summit. On 16 May 2000, Hipólito Mejía, the Revolutionary Democratic Party candidate, was elected president in another free and fair election. He defeated Dominican Liberation Party candidate Danilo Medina 49.8% to 24.84%. Former President Balaguer garnered 24.68% of the vote. Mejia entered office on 16 August with four priorities: education reform, economic development, increased agricultural production, and poverty alleviation. Mejia also champions the cause of Central American and Caribbean economic integration and migration, particularly as it relates to Haiti.

The military consists of about 24,000 active duty personnel, commanded by the president. Its principal mission is to defend the nation, but it serves more as an internal security force. The army, twice as large as the other services combined, consists of four infantry brigades and a combat support brigade; the air force operates three flying squadrons; and the navy maintains 30 aging vessels. The Dominican Republic's military is second in size to Cuba's in the Caribbean.

The armed forces participate fully in counter-narcotics efforts. They also are active in efforts to control contraband and illegal immigration from Haiti to the Dominican Republic and from the Dominican Republic to the United States.