Democrats' Last-Minute Campaigning

From CBS News' Maria Gavrilovic, Aaron Lewis and Fernando Suarez:

COLUMBIA, S.C. -- Barack Obama, Hillary Clinton and John Edwards are spending the day looking for last-minute votes in today's South Carolina Democratic primary.

Obama and his campaign are cool and confident, with the most recent polls showing Obama with a double digit lead.

Campaign spokesman Bill Burton told reporters, "We feel great about the strength of our ground game in South Carolina where we've taken on the full force of both Clintons, their persistent dishonest attacks and their ground operation with over 100 paid staff members."

At a rally at the University of South Carolina last night, Obama tried to diffuse the notion that he may win the primary because of the African American vote.

"We were told that we couldn't build an organization of people from every walk of life; white and black, and Asian and Hispanic - people from north and south and east and west, young and old - that our politics was inalterably divided. And yet look at this crowd here today - look at the people behind me today. We are defying the conventional wisdom. We are creating a new politics in a new America."

This morning, Obama met with voters at the Bethlehem Baptist Church and at a local restaurant in Columbia. He will speak at a rally tonight before heading to Macon, Georgia. Obama will begin campaigning in Feb. 5 primary states tomorrow.

Across town, John Edwards stepped off of his campaign bus at the Greenview Park polling station and was greeted by a throng of people that consisted of roughly 70% reporters and cameras and 30% voters. He was joined by the mayor of Columbia, who has endorsed him.

The media crush followed Edwards into the polling station where he shook hands with poll workers and voters. One woman took exception to the media entourage pushing and elbowing, and said "Excuse me! People trying to vote here!"

Edwards rallies tonight in Columbia before campaining in Feb. 5 states next week.

Meantime, Hillary Clinton, who's off to Tennessee tonight, campaigned with her daughter Chelsea at a local Shoney's restaurant in Columbia and asked for help from an 8-year-old.

Messiah Cornish was playing with his Nintendo DS when Clinton and a mob of cameras and reporters showed up and the former First Lady saddled up next to him.

Clinton asked, "This guy -- what's he doing?"

Cornish responded in a low voice that the character in his Power Rangers game was beating up the bad people.

Clinton asks, "Beating up evil people? Can I have him come with me?"