The Republican National Committee (RNC) is the primary committee of the Republican Party of the United States. Its members are chosen by the state delegations at the national convention every four years. It is responsible for developing and promoting the Republican brand and political platform, as well as assisting in fundraising and election strategy. It does not have direct authority over elected officials. It is also responsible for organizing and running the Republican National Convention. When a Republican is president, the White House controls the committee. According to Boris Heersink, "political scientists have traditionally described the parties' national committees as inconsequential but impartial service providers."

The Democratic National Committee (DNC) is the principal committee of the United States Democratic Party. The committee coordinates strategy to support Democratic Party candidates throughout the country for local, state, and national office, as well as works to establish a "party brand". It organizes the Democratic National Convention held every four years to nominate candidates for President and Vice President of the United States and to formulate the party platform. While it provides support for party candidates, it does not have direct authority over elected officials. When a Democrat is president, the White House controls the Committee. According to Boris Heersink, "political scientists have traditionally described the parties’ national committees as inconsequential but impartial service providers."