The Green Papers -- This site covers the national Presidential campaign and the status of elections for U.S. members of Congress and state governors.
FiveThirtyEight Blog -- During the 2008 elections, statistician Nate Silver's FiveThirtyEight was an independent blog. Silver correctly predicted the winner using his own methodology focused on the 538 votes in the Electoral College (more about that later) votes, and he earned himself a spot at the New York Times.
2012 Presidential Candidate Fundraising Summary from OpenSecrets.org -- National campaigns are expensive. If you want to learn about who is paying for this one, check out the long-time favorite campaign finance site OpenSecrets.org. Among the many goodies, their 2012 Presidential Candidate Fundraising page offers are a searchable database of donors and campaign donations organised by industry sector.
Sunlight Foundation Guide to Super Pacs -- The Sunlight Foundation is a non-profit, nonpartisan organization that uses the power of the Internet to catalyze greater government openness and transparency, and provides new tools and resources for media and citizens, alike.