President Bush will deliver his last State of the Union address tonight, trying to be heard over the din of the presidential campaigns. With his approval ratings down in the thirties and the Democrats running Congress, we get a preview of what he plans for his final year in office. Also, after South Carolina, are the Democrats any closer to deciding their nominee? Senators Barack Obama and Hillary Clinton have won two states apiece. Next Tuesday, they'll face off in 22 primaries and caucuses around the country. We hear from both campaigns. Will Ted Kennedy's endorsement make a big difference? On the Republican side, tomorrow's Florida primary has become a nasty confrontation between McCain and Romney. Can Giuliani survive?