American Elections

Sources for understanding and tracking elections in the United States

Party Platforms

List of political parties in the United States - Wikipedia - links to national and state parties in addition to Democratic and Republican

OpenSecrets
Resources for federal campaign contributions, lobbying data and analysis
Federal Election Commision
Independent regulatory agency charged with administering and enforcing the federal campaign finance law. The FEC has jurisdiction over the financing of campaigns for the U.S. House, Senate, Presidency and the Vice Presidency.
State Campaign Finance Laws
National Conference of State Legislatures - see also the linked page here for "Additonal Resources / Helpful Links"