Republican presidential candidates

Gingrich Assailed By Rivals, Fires Back At Romney [VIDEO]
Gingrich Assailed By Rivals, Fires Back At Romney [VIDEO]
Gingrich Assailed By Rivals, Fires Back At Romney [VIDEO]
Attacked as a lifelong Washington insider, newly minted Republican front-runner Newt Gingrich parried criticism from Mitt Romney in campaign debate Saturday night, telling the former Massachusetts governor, "The only reason you didn't become a career politician is because you lost to Teddy Kennedy in 1994."