American National Election Studies — data on voting, public opinion, and political participation for social scientists, teachers, and students.
Congress Votes Database — voting records of the U.S. Congress since 102nd Congress (1991) : who missed votes, who voted in late-night sessions, which bills passed by a narrow margin & more.
Congress.org — look up your lawmakers (Senators and Representatives) and track their votes by email.
Election Guide — by IFES (International Foundation for Election Systems). Find quick info on the govt. structure, electoral system, and brief country data of countries around the world.
FactCheck.org: Annenberg Political Fact Check — “a nonpartisan, nonprofit, ‘consumer advocate’ for voters that aims to reduce the level of deception and confusion in U.S. politics.”
Federal Election Commission — find campaign finance reports and data, finance law resources, and info on registering to vote, voter turnout statistics, and how elections are framed and administered.
Vote Smart — The voter’s self defense system. Find nat’l and state level info on your representatives. Explains each candidate’s views along with voting records. Includes info on campaign reform.