Political parties are central players in the financing of American elections, yet their role is often overshadowed in public discussion by candidates and outside groups. Party committees raise money, support candidates, build organizations, and mobilize voters, all within a distinct set of rules. Understanding what these committees are, how they are organized, and how they fund campaigns adds an important dimension to any reading of campaign finance data. This guide offers a nonpartisan overview of the party committees that operate in federal elections.
At the top of each major party's structure sits its national committee. The Democratic National Committee traces its origins to 1848, making it the oldest continuing political committee in the country, while the Republican National Committee was established in 1856 as the party formed and grew. These national committees coordinate their parties' overall strategy, organize the presidential nominating conventions, and raise substantial sums to support candidates across the country. They are permanent institutions that operate between elections as well as during them, maintaining staff, data operations, and fundraising networks year-round.
The national committees occupy a special place in campaign finance law. They are subject to higher contribution limits than candidates or political action committees, reflecting their broad role, and those limits are adjusted for inflation over time. They also engage in a wide range of activities, from direct support of candidates to voter registration and turnout programs that benefit the entire ticket.
Alongside the national committees are the four congressional campaign committees, often called the Hill committees because they focus on races for Congress. Each chamber has one committee for each major party. For the House of Representatives, the Democratic Congressional Campaign Committee and the National Republican Congressional Committee work to elect their party's House candidates. For the Senate, the Democratic Senatorial Campaign Committee and the National Republican Senatorial Committee perform the same function for Senate races.
These committees have deep historical roots. The congressional committees date to the 1860s, when members of Congress first organized to support like-minded candidates, while the senatorial committees emerged in the early twentieth century, after the Seventeenth Amendment of 1913 established the direct election of senators and created the need for organized Senate campaign support. Today the Hill committees are among the most important institutional actors in competitive congressional races, concentrating their resources where control of each chamber is most likely to be decided.
Below the national and congressional committees are the state and local party committees, which operate within individual states and communities. These committees support candidates up and down the ballot, conduct voter outreach, and serve as the grassroots backbone of each party. In federal elections, state party committees can play a meaningful role, particularly in coordinated efforts to turn out voters. They are subject to their own contribution limits and disclosure requirements, and they often work in concert with the national and congressional committees during major campaigns.
Party committees support candidates in several distinct ways. The most direct is making contributions to candidates, subject to the applicable limits. Beyond direct contributions, parties engage in a special category known as coordinated party expenditures, spending made in cooperation with a candidate's campaign on activities such as advertising. These coordinated expenditures are subject to their own limits, which are set by formula and adjusted for inflation, and they represent a recognized form of party support that sits between an ordinary contribution and fully independent spending.
Party committees may also make independent expenditures, spending to support their candidates without coordinating with them, in the same manner as other independent spenders. In addition, parties devote significant resources to activities that benefit their candidates collectively, including voter registration drives, get-out-the-vote operations, data and analytics, opposition research, and candidate recruitment and training. These functions make parties more than just funding conduits; they are organizing institutions that shape the broader environment in which campaigns operate.
Party committees raise money from individuals, from political action committees, and through transfers among affiliated party organizations, all within the contribution limits set by law. A common modern tool is the joint fundraising committee, an arrangement in which a candidate, one or more party committees, and sometimes other committees join together to raise money through a single effort, then divide the proceeds according to the limits that apply to each participant. Joint fundraising allows a single large contribution from a donor to be allocated across multiple recipients, each receiving no more than its legal maximum.
The role of party committees was profoundly shaped by the soft money controversy of the 1980s and 1990s. During this period, the national parties raised enormous sums outside the federal contribution limits, justified as funding for party-building and issue advocacy rather than direct candidate support. Critics argued that this soft money effectively circumvented the post-Watergate limits and allowed unlimited contributions to flow to the parties. The Bipartisan Campaign Reform Act of 2002, known as McCain Feingold, responded by prohibiting the national party committees from raising or spending soft money. This reform fundamentally changed how parties operate, requiring them to fund their activities with limited, fully disclosed contributions.
The legal changes of 2010, which gave rise to Super PACs and unlimited independent spending, altered the competitive position of party committees. With outside groups now able to raise and spend without limits, some of the money and influence that might once have flowed through the parties shifted toward independent organizations. Party committees continue to play a major role, but they now operate alongside Super PACs and other outside spenders that face fewer restrictions. This dynamic has prompted ongoing debate about the relative strength of formal party organizations compared with the independent groups that surround them.
In the most competitive races, party committees often concentrate their resources where control of the Senate or the House is most likely to be decided. The Hill committees, in particular, target the battleground states and districts that will determine each chamber's majority, directing contributions, coordinated expenditures, and organizing efforts toward those contests. For this reason, the activity of party committees is an important signal of where the parties themselves believe the decisive battles will be fought, complementing the picture provided by candidate fundraising.
Party committee activity appears in the campaign finance record in several forms. Contributions from party committees to candidates are reported in candidates' filings, while the parties' own receipts, disbursements, coordinated expenditures, and independent expenditures appear in the committees' separate reports. A campaign finance tracker focused on candidates captures the direct party contributions a candidate receives, while a complete view of party involvement in a race also requires consulting the party committees' own filings. Understanding the role of these committees helps explain the institutional support behind a candidacy and the broader strategic choices the parties make in directing their resources.
See it in the data: Track the candidates these committees are backing in our 2026 Campaign Finance Tracker.