(CNN) - Barack Obama just won a state whose population is less than 4 percent African-American. On January 26, he will be on the ballot in a state with a considerably higher percentage of African-Americans: South Carolina, where that demographic makes up nearly 50 percent of Democratic primary voters there.
African-Americans have been intensely loyal to the Clintons, and continue to support Hillary Clinton over Obama in the Palmetto State. But that gap has significantly narrowed in recent weeks - and with this key win tonight, it's unlikely they will stand in his way there.
- CNN Senior Political Analyst Bill Schneider