Find elected officials at the national level, state level, and local level. USA.gov makes it easy to find elected officials in your area; just enter your address from the link below.
In the United States of America, there are two main political parties: Democrats and Republicans. The links below direct to each party's platform or principles.
Presently and historically, there have been several other political parties, but most do not have ballot access in all fifty states. Currently, the most active and largest third-party political parties in the United States are the Libertarian Party, Green Party, and Constitution Party. The Library of Congress offers a more in-depth explanation of political parties at the link below.