CBS News breaks down 2012 GOP contenders

Of Gingrich, they write:

He'll be visiting three Iowa cities next week on a book tour and has for months been in and out of the state more often than a freight train of cattle. State Republican officials say Gingrich is very popular with the party's base of social and Christian conservatives, but also claims considerable support from the business community as well. At some past events, Gingrich has been urged to run for the top job by people who see him as the best man to take on Mr. Obama in a debate. Whatever the Washington political elite may say about Gingrich, he is popular in Iowa and party pros in the Hawkeye state now fully expect him to run. 'He's taking all the right steps in preparation of setting up a statewide organization,' one official said of Gingrich.