The Center for Voting and Democracy studies the impact of voting systems on proportional representation and voter turnout, as well as the influence of money in elections.

The Center for Public Integrity publishes the findings of investigations on government accountability and analyses of public service and ethics-related issues.

The League of Women Voters has a long tradition of grassroots citizen organization.

Kids Voting USA is nonprofit and nonpartisan and aims to secure democracy for the future by involving youth in the election process.

US Census Bureau Voting And Registration Data reports voting and registration by demography and socioeconomic characteristics.

Black Box Voting is a nonpartisan, nonprofit, 501c(3) organization. They are a consumer protection group for elections, funded by citizen donations.

A major nonpartisan international organization, International Foundation for Election Systems assists transitional democracies. IFES has implemented collaborative democracy solutions in more than 100 countries.