POLITICAL EXPERIENCE: He served as the 58th Speaker of the United States House of Representatives from 1995 to 1999. He represented Georgia's 6th congressional district as a Republican member from 1979 to 1999.
EDUCATION: He received a B.A. in history from Emory University in Atlanta in 1965. He received an M.A. in 1968, and then a PhD in modern European history from Tulane University in New Orleans in 1971.
FAMILY: Callista Gingrich (wife); Children: Two daughters with Jackie Battley (first wife)
PROS AND CONS according to ABC News' Amy Bingham, Maya Srikrishnan, Jared Pliner, Jennifer Schlesinger and Josh Goldstein
- PROS: Name ID. Goodwill among party base. Seen as "ideas guy," big thinker and intellectual heavyweight. Skilled grassroots organizer.
CONS: Messy personal life, including multiple divorces. Fundraising: He's been able to raise for his 527 groups but those don't have the restrictive limits that presidential candidate has to live under.