Now Playing: 03-06-12 Marketplace

On Super Tuesday, we explore how the extended, expensive GOP primary race could help state primaries that never mattered before -- in big media markets like California and New York. A new report says student loan debt now tops U.S. credit card debt. IBM's Watson will use its talents on Wall Street in a Citigroup deal. GM has announced that it's temporarily suspending manufacture of the Chevy Volt. And Pulitzer Prize-winning political cartoonist Mark Fiore offers some super PAC satire.