CBS Poll: Hillary, Rudy Expand Leads

A new CBS News poll finds Hillary Clinton and Rudy Giuliani expanding their national leads in their respective primary fields. On the Republican side, Giuliani leads with an astonishing 47%, followed by John McCain with a distant 25%, and Mitt Romney at 10%. On the Dem side, Hillary Clinton has 39%, with Barack Obama and John Edwards fighting it out for second place. Obama has 24%, and Edwards 21%.