Newt Gingrich
Followers: 1.3 million
Sample tweet: "It is sadlt clear from his remarks at andrews that president obama has not come to grips with the 2010 election results--"
The former House Speaker has launched an exploratory website to test the waters for a 2012 presidential bid. Should he run, his familiarity with Twitter will be a plus. Gingrich is vigilant in tweeting about his op-eds, television appearances and distaste for President Barack Obama's policies. After Obama nominated Sonia Sotomayor to the Supreme Court in May 2009, Gingrich used Twitter to call for her withdrawal. "White man racist nominee would be forced to withdraw. Latina woman racist should also withdraw," he wrote. VanityFair.com recently noticed that controversial message and all tweets before July 22, 2010, have been deleted.