Rick Perry and Mitt Romney sparred about Social Security, health care and what is and is not in their respective books. And who could forget that jaw-dropping moment when the crowd booed a gay soldier.
MSNBC's Lawrence O'Donnell discussed the winners and losers with MSNBC's Chris Hayes and Howard Fineman and Sam Stein, both of The Huffington Post. To them, Rick Perry's frontrunner position is in major jeopardy after a weak performance.
What's your take on the current maneuvering of this crop of contenders? Make sure to drop us a line or two in the comment section below.