Bob Schieffer speaks with Gov. Bill Richardson (D-N.M.) about his indecision to support either Barack Obama or Hillary Clinton. Schieffer also speaks with two Democratic senators about campaign '08.

Tensions are intensifying between the Barack Obama and Hillary Clinton campaigns. Bob Schieffer speaks with Gov. Janet Napolitano (D-Ariz.) and Gov. Jennifer Granholm (D-Mich.) about these campaigns.

Obama campaign chief strategist David Axelrod and Howard Wolfson, communications director for the Clinton campaign, discuss the differences between the two candidates with Bob Schieffer.

Huckabee tells Bob Schieffer about his campaign. Schieffer also speaks with Republican strategist, and former President Bush advisor, Karl Rove and Joe Trippi, a former aide for John Edwards.

The presidential candidates are intensifying their campaigns in preparation for Super Tuesday. Bob Schieffer speaks with Republican hopeful John McCain and Democratic candidate Barack Obama.

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