By Lawrence Wilson Democrats, at first reluctant to see the problem, are seeking solutions. Their efforts could be too little, too late. Democrats gathered at the state fairgrounds in Columbia, South Carolina, to await the results of their party’s primary election. President Joe Biden, the only candidate to campaign in the state, won handily, as expected. From the podium, Rep. James Clyburn (D-S.C.), 83, took a call from the chief executive, who thanked South Carolinians for their support. Applause followed, with congratulations all around. As the modest crowd dispersed, Mr. Clyburn…