Public opinion, interest groups, and polls influence government in several ways. Public opinion represents the views of the population and helps inform officials, but may not represent a consensus. Polls measure public opinion through random sampling, but push polls can manipulate responses. Interest groups lobby the government through expertise, funding, and mobilizing members to advocate for issues. However, groups may prioritize certain interests over the public good, and money in politics raises concerns about undue influence. Overall, these forces both support democracy by representing the people and informing officials, but can also distract from leadership and problem solving.