Posts include RNC Web ads and pictures of vintage Republican opposition research, including a 19-page brochure attacking President Jimmy Carter's record.

President Obama's reelection campaign launched its own Tumblr site in October, which features a mix of political posts and more offbeat pictures of campaign staffers on the trail.

The president's campaign staff, who used social networking to raise record amounts of money and propel voter turnout in 2008, also signed up for Instagram, a photo-sharing application that enables iPhone users to add faux-vintage filters to images, earlier this week. The platform has become increasingly popular among amateur photographers with the popular smartphone.