They also vied for who's most religious and toughest on illegal immigration.
Carly Fiorina gets personal toward Hillary Clinton, and Jim Gilmore participates in only his second debate.
Days before the Iowa caucus, the presidential candidate panders to his base.
Mike Huckabee's presidential campaign released an Iowa-themed parody video of Adele's 'Hello' that'll make you want to say 'Goodbye.'
There weren't supposed to be more debates until after both Iowa and New Hampshire had voted.