The first question is from a New Yorker who challenges Giuliani on New York City’s “sanctuary city” status during his term as mayor. Giuliani responds that “sanctuary” is a mischaracterization of New York’s policy, and Romney jumps in, correctly stating that Giuliani’s administration went to court to maintain New York’s right to give illegal immigrants some public benefits.

Here’s where it gets far dirtier than any Democratic debate has been thus far. Giuliani says, “Mitt generally criticizes people in cases when he’s had far the worse record.” He then accuses Romney of employing undocumented domestic workers in his Massachusetts home. “In his home home, illegal immigrants were being imported. .. He had a sanctuary mansion, not just a sanctuary city.”

Romney denies and the crowd seems to be with him.

—Dana Goldstein

Dana Goldstein, a former associate editor and writer at the Prospect, comes from a family of public-school educators. She received the Spencer Fellowship in Education Journalism, a Schwarz Fellowship at the New America Foundation, and a Puffin Foundation Writing Fellowship at the Nation Institute. Her journalism is regularly featured in Slate, The Atlantic, The Nation, The Daily Beast, and other publications, and she is a staff writer at the Marshall Project.