6. The Bhutto factor
Last week's assassination of former Pakistan leader Benazir Bhutto brought foreign policy back to the surface of a presidential campaign that had centered around domestic issues in recent months. Will the candidates seen as strong on foreign policy and tough on terrorism -- Rudy Giuliani and John McCain -- receive a bump from caucus-goers as a result?(AP Photo)

Text by James Pindell and Jason Tuohey

