Single-member districts are electoral areas where one representative is elected to serve the constituents. Each district is designed to have roughly equal populations, ensuring that each person's vote carries similar weight. This system is commonly used in various elections, including those for the U.S. House of Representatives. In single-member districts, voters choose one candidate on the ballot, and the candidate with the most votes wins. This method can lead to a clear winner and often encourages a two-party system, as smaller parties may struggle to gain representation. However, it can also result in some voters feeling underrepresented if their preferred candidate does not win.