Drake University in Des Moines, Iowa, tonight (9pm to 11pm ET)
Where to watch/listen:
Pre-debate coverage: Join Senior Political Editor Steve Chaggaris and White House correspondent Major Garrett for CBSN's livestream coverage of debate preparations will air online at
CBSnews.com/live starting at 6pm ET.
CBS News is hosting the debate in conjunction with CBS' Des Moines affiliate, KCCI, and the Des Moines Register. "Face the Nation" anchor
John Dickerson will be the principal moderator, and he will be joined by CBS News Congressional Correspondent
Nancy Cordes, KCCI anchor Kevin Cooney and the Des Moines Register's political columnist, Kathie Obradovich.