In the United States, the Democratic Party and the Republican Party are the two major political parties. Both parties are broad coalitions, meaning they bring together many different voters, leaders, and interest groups. Because of this, no political party is made up of people who agree on every issue. Even so, parties play a major role in structuring elections, organizing government, and shaping public debate. Over time, both major parties have changed in important ways, but they continue to be central to American political life.

In general, Democrats are more often associated with a liberal political outlook. They tend to support a stronger role for the federal government in addressing economic and social problems. Democrats are generally more supportive of government programs, regulations, and reforms designed to promote opportunity, equality, and public welfare. They are also often associated with support for labor protections, civil rights, and policies intended to expand access to services, rights, and protections.
In general, Republicans are more often associated with a conservative political outlook. They tend to support a smaller role for the federal government in the economy, lower taxes, and fewer regulations on businesses. Republicans are generally more likely to emphasize individual responsibility, free enterprise, states' rights, and traditional social values. They are also often associated with strong national defense and a more limited view of federal power in many areas of public life.

One of the clearest differences between the two parties is how they tend to view the role of government. Democrats generally see government as an important tool for solving public problems and expanding access to resources and protections. Republicans generally place more trust in individuals, private institutions, markets, and state or local governments, and they are often more cautious about expanding federal authority. These are broad patterns rather than fixed rules, and there is significant diversity of opinion within both parties.
It is also important to recognize that political parties change over time. As new issues emerge and as the electorate changes, parties adjust their priorities, redefine their coalitions, and respond to shifting public concerns. This means that the names Democratic and Republican have remained the same, but what those parties emphasize, who they attract, and how they define their goals have changed across American history.
For that reason, it is most accurate to think of the Democratic and Republican parties not as fixed groups with identical beliefs, but as large political coalitions that organize ideas, candidates, and voters in different ways. In general, Democrats tend to favor a more active government and a more reform-oriented approach to public policy, while Republicans tend to favor more limited government and a more conservative approach. Understanding these broad differences provides a starting point for analyzing how parties shape the relationship between citizens and government in the United States.