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Mitt Romney is trying to explain what he meant when he said that he isn't concerned about the very poor or rich. CNN's Dana Bash reports.
RELATED STORY: Romney says 'poor' comment needs context
Brian Todd reports on fascinating, newly-released audiotapes from moments after JFK assassination.
The sources of these huge political donations are revealed. CNN's Lisa Sylvester reports.
RELATED STORY: Mann: Money talks in Republican presidential primaries
Mitt Romney and Barack Obama go throat to throat in the race for commander-in-crooner. CNN's Jeanne Moos reports.