Dems' Debate; Economy; Healthcare; Colbert; Karen Hughes

Spirited analysis of Dems' debate-- Hillary's equivocating leaves her vulnerable, Obama's untapped potential, Edwards new ad.  Economic jitters-- stocks, oil prices, but unemployment okay- recession or?  Bipartisan progress for CA healthcare while Rudy fuels fear of British system with his prostate. Colbert's fresh voice kept out of S.C.  Karen Hughes leaves tough Mideast pr post.