Big-name companies seem to be unaffected.

Romney builds lead. Rivals pledge to stay in race.

This will be the first of two pivotal debates before the Iowa caucuses. 

Clinton called some of Gaddafi's actions "theater" and game playing."

When asked if he would leave Libya, Gaddafi laughed and said, "Would anyone leave his homeland? Why would I leave Libya?" Meantime, the U.S. appears poised to enter the country militarily and has moved its naval and air forces closer to the area.