CLEVELAND, United States: Gwen Ifill (R), moderator of the vice-presidential debate, faces US Vice-President Dick Cheney (L) and Democratic vice-presidential candidate John Edwards 05 Ocotber, 2004 during the candidates' only face-to-face debate in the 2004 White House race at Case Western Reserve University in Cleveland, Ohio. The vice-presidential debate focused on foreign and domestic policies. AFP PHOTO/Jeff HAYNES (Photo credit should read JEFF HAYNES/AFP via Getty Images)
CLEVELAND, United States: Gwen Ifill (C), moderator of the vice-presidential debate, faces US Vice-President Dick Cheney (L) and Democratic vice-presidential candidate John Edwards 05 October, 2004 during the candidates' only face-to-face debate in the 2004 White House race at Case Western Reserve University in Cleveland, Ohio.The vice-presidential debate is to focus on foreign and domestic policies. AFP PHOTO/Jeff HAYNES (Photo credit should read JEFF HAYNES/AFP via Getty Images)
CLEVELAND - OCTOBER 5: Vice President Dick Cheney and Democratic vice presidential candidate John Edwards participate in a debate October 5, 2004 at Case Western Reserve University in Cleveland, Ohio. The debate is the only one scheduled between Edwards and Cheney. Gwen Ifill is the moderator. (Photo by Alex Wong/Getty Images)
ST. LOUIS - OCTOBER 02: PBS journalist and debate moderator Gwen Ifill (C) listens to Democratic vice presidential candidate U.S. Senator Joe Biden (D-DE) as he makes a point while Republican vice presidential candidate Alaska Gov. Sarah Palin (L) looks on during the vice presidential debate at the Field House of Washington University's Athletic Complex on October 2, 2008 in St. Louis, Missouri. The highly anticipated showdown between the two vice-presidential candidates will be their only debate before the election. (Photo by Don Emmert-Pool/Getty Images)
Republican Sarah Palin (L) greets moderator Gwen Ifill (R) following her vice presidential debate with Democrat Joseph Biden October 2, 2008 at Washington University in St. Louis, Missouri. Vice presidential nominees Palin and Biden clashed at their crucial vice presidential debate, with the Alaska governor under pressure to quell questions about her knowledge and experience. AFP PHOTO / PAUL J. RICHARDS (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
