In the examination of the witnesses he showed great tact, and successfully kept from the jury facts which would have left them no excuse for a verdict of acquittal. But it was in his address that his great powers made themselves manifest. The opening was impassioned and powerful. Scarcely had he spoken ten minutes before the Bench, the Bar, the jury, and the audience were in tears, and, during the entire speech, so entirely did he control the feelings of every one who heard him, that the sobs from every part of the courtroom were audible above the sounds of his voice. When he had concluded, the jury went weeping from the box to the room of their deliberations, and soon returned a verdict of acquittal.
This effort established the fame of McDuffie as an orator and man of great mental powers. Fortunately at that time it was the pride of South Carolina to call to her service the best talent in all the public offices, State and national, and with one acclaim the people demanded his services in Congress. Mr. Simpkins, the incumbent from the Edgefield district, declined a re-election, that his legal partner, Mr. McDuffie, might succeed him, and he was chosen by acclamation. He came in at a time when talent abounded in Congress, and when the country was deeply agitated with the approaching election for President. Almost immediately upon his entering Congress an altercation occurred upon the floor of the House between him and Mr. Randolph, which resulted in the discomfiture of Mr. Randolph, causing him to leave the House in a rage, with the determination to challenge McDuffie. This, however, when he cooled, he declined to do. This rencontre of wit and bitter words gave rise to an amusing incident during its progress.