A lobbyist is a person who is hired to influence government officials and lawmakers on behalf of a specific group, organization, or interest. They work to persuade these officials to support legislation or policies that align with the goals of their clients, which can include businesses, non-profits, or other interest groups. Lobbyists often provide information, research, and expertise to help shape decisions. Lobbying is a common practice in many countries, including the United States, where it is regulated to ensure transparency. Lobbyists must register with the government and disclose their activities, which helps maintain accountability in the political process.