Before this time Mr. Lincoln had dissolved partnership with Stuart and entered into a law partnership with Judge Logan. In 1843 both Lincoln and Logan were candidates for nomination for Congress and the personal ill-will caused by their rivalry resulted in the dissolution of the firm and the formation of a new law firm of Lincoln & Herndon, which continued, nominally at least, until Mr. Lincoln's death.
The congressional nomination, however, went to Edward D. Baker, who was elected. Two years later the principal candidates for the Whig nomination for Congress were Mr. Lincoln and his former law partner, Judge Logan. Party sentiment was so strongly in favor of Lincoln that Judge Logan withdrew and Lincoln was nominated unanimously. The campaign that followed was one of the most memorable and interesting ever held in Illinois.