Broward County has been a Democratic stronghold since 1992, voting for the party's presidential nominee in every election since then. It is now considered one of the most reliably Democratic counties in the state,[59][60] giving greater than 60% support to the party nominee in every election since 1996. From 1948 to 1988, the county leaned Republican, voting for the Republican nominee in every election except 1976, even supporting Republican Barry Goldwater by a 56-44 margin while he lost the national election in a landslide. This change in voting tendencies can be attributed to the large migrations of middle and upper-class snowbirds and transplants from more liberal states, a growing LGBT community, liberal positions on social issues such as abortion and gun control, and naturalized U.S. citizens born in places such as Latin America, the Caribbean, Canada, Europe, and Asia.

According to the Secretary of State's office, Democrats maintain a majority among registered voters in Broward County. The county is also one of the few counties in the state where Independents outnumber Republicans.

The Broward County Charter provides for a separation between the legislative and administrative functions of government. The Board of County Commissioners is the legislative branch of Broward County Government. The County Commission is composed of nine members elected by district. Each Commissioner must be a resident of the district for which he or she seeks election. Each year the Commission elects a mayor and vice mayor. The mayor's functions include serving as presiding officer, and as the county's official representative. The Commission appoints the County Administrator, County Attorney and County Auditor. The commission also appoints numerous advisory and regulatory boards.