ALBUQUERQUE, NM - FEBRUARY 01:  Economic advisor Austan Goolsbee (R) listens as Democratic presidential hopeful Sen. Barack Obama (D-IL) answers questions from audience members during a campaign stop at the Albuquerque Convention Center February 1, 2008 in Albuquerque, New Mexico. Voters February 5 go to the polls on a day dubbed Super Tuesday  in 24 states where 41 percent of the Democratic delegates are up for grabs on the Democratic side and 52 percent on the Republican side. Getty Images logo Getty Images 49 months ago

ALBUQUERQUE, NM - FEBRUARY 01: Economic advisor Austan Goolsbee (R) listens as Democratic presidential hopeful Sen. Barack Obama (D-IL) answers questions from audience members during a campaign stop at the Albuquerque Convention Center February 1, 2008 in Albuquerque, New Mexico. Voters February 5 go to the polls on a day dubbed Super Tuesday in 24 states where 41 percent of the Democratic delegates are up for grabs on the Democratic side and 52 percent on the Republican side.