Politics, the process of making policy decisions, requires the careful selection of qualified candidates. In an effort to make that job easier, political parties evolved. These organizations form when dedicated people come together to win elections, operate the government, and determine public policy. The members work together to develop a set of ideals and positions called the party's political platform. They do this by recruiting candidates for public office, organizing and running elections, presenting policies to voters, taking responsibility for running the government, and creating policies that support the party's platform. Political parties also act as the organized opposition to the party in power. There are many different types of political parties, including mass parties, which are the most recognizable, catch-all parties, which seek to gain as many members as possible even if that degrades their platform, niche parties, which form around a specific issue, such as environmentalism, and cadre parties, which seek to allow elites to retain power. All types of political parties have an organizational structure that bears many similarities to large corporations, but their division of power is much less rigid. Still, political parties maintain a firm grasp on the governments of most modern-day democracies.