Mainstream parties are political organizations that hold significant influence and support within a country's political system. They typically represent a broad range of interests and ideologies, appealing to a large segment of the population. These parties often participate in elections and have established platforms that address key issues such as the economy, healthcare, and education. In many democracies, mainstream parties are contrasted with smaller or fringe parties, which may focus on specific issues or represent niche interests. Examples of mainstream parties include the Democratic Party and Republican Party in the United States, or the Conservative Party and Labour Party in the United Kingdom.