What is the main idea in this article pls copy and paste your answer

The president and vice president act as the leaders of their political party. This role is not part of the Constitution, but has evolved over time as part of the political process. A political party is an organized group of people who share similar views and work to influence the government in support of those views. As party leaders, the president and vice president work to accomplish the party’s goals for how the government should address the issues facing our nation. The Republican and Democratic parties are the two major political parties in the U.S.