This list is not meant to be exhaustive. It is a compilation of what I think are the best resources available from reputable organizations which deal with issues and politicians in a non-partisan way and which seek to promote greater transparency from the government and elected officials.
Online Resources for Researching Information about the Government
OpenCongress brings together official government data with news coverage, blog posts, public comments, and more to give you the real story behind what's happening in Congress. Small groups of political insiders and lobbyists already know what's really going on in Congress. Now, everyone can be an insider.
Show Us the Data
Show Us the Data: Most Wanted Government Documents is collecting examples of government documents and data that are unclassified and should be easily available to the public online, but are not.
Open Secrets: Center for Responsive Politics
OpenSecrets.org is the nation’s premier independent website tracking the influence of money on U.S. politics, and how that money affects policy and citizens’ lives.
OpenCRS: Congressional Research Reports
Taxpayers spend over $100 million a year to fund the Congressional Research Service, a "think tank" that provides reports to members of Congress on a variety of topics relevant to current political events. Yet, these reports are not made available to the public in a way that they can be easily obtained. Open CRS provides citizens access to CRS Reports already in the public domain and encourages Congress to provide public access to all CRS Reports.
Online Resources On Elected Officials and for Contacting People in Government
The White House: Office of Public Engagement
The Office of Public Engagement creates and coordinates opportunities for direct dialogue between the Obama Administration and the American public, while bringing new voices to the table and ensuring that everyone can participate and inform the work of the President.
Project Vote Smart
Project Vote Smart provides detailed information – biographical information, campaign finances, interest groups ratings, issue positions, and public statements – on elected officials including the President, members of Congress, state officials and leadership in state legislatures.
GovLuv uses Twitter to connect you instantly with your representatives in government.
General Sources of Information that Relate to Citizen Advocacy
Sunlight Foundation Insanely Useful Web sites
The Sunlight Foundation was founded in 2006 with the non-partisan mission of using the revolutionary power of the Internet to make information about Congress and the federal government more meaningfully accessible to citizens.
Personal Democracy Forum
Blog focusing on the latest news and information on the intersection between technology and politics.
The Citizen's Guide to Lobbying Congress
Exactly what the title says it is. A handy, practical guide for citizens to lobby their Congressional representatives.