In 1856 Buchanan won the Democratic nomination in a grueling convention that rejected its more popular and more controversial candidates. He was elected president with only 45 percent of the popular vote and carried only four of the fourteen northern states. In their campaign platform, the Republicans had condemned the pro-southern President Pierce and his administration as criminals to be severely punished. In return, numerous southern leaders warned that the election of an entirely northern Republican president would justify and require secession. The Republican Frémont had won a northern majority, but Buchanan and the Democrats had won a slim national victory, greatly helped by the Know-Nothing candidacy of Millard Fillmore. Any further defection to the Republicans by northern Democrats in 1860 could easily elect a Republican president and make secession likely. Thus, Buchanan's goal of sectional peace would require first the reunification of the Democratic party.
Party unity would demand of Buchanan a harmonious relationship with Senator Stephen A. Douglas, the party's most popular northwestern leader. Douglas had authored the Kansas-Nebraska Act, which repealed the Missouri Compromise barrier against western slavery and decreed that territorial citizens themselves could decide for or against slavery. Douglas was still popular in the South and had contributed much time and, by his own account, $40,000 to Buchanan's election. Buchanan, however, envied, resented, and disliked Douglas, and southern radicals considered the senator a threat to their ambitions. After thanking the famous senator in a letter addressed to "Samuel A. Douglas," the president awarded the northwestern political patronage, including cabinet posts, to Douglas' most bitter enemies.
Advised primarily by southern friends, Buchanan chose for his cabinet four slaveholding southerners: Howell Cobb, Jacob Thompson, John B. Floyd, and Aaron Brown for the departments of Treasury, Interior, War, and the Post Office, respectively. The State and Navy departments and the attorney general's office went to northerners Lewis Cass, Isaac Toucey, and Jeremiah Black. Cass was senile and useless; Toucey was pro-southern, like the president; and Black would be pro-southern on legal grounds until after the actual secession. The big-city politicians, representatives of commerce and industry, Free-Soil Democrats, and popular-sovereignty followers of Douglas were ignored. The cabinet was a homogeneous group of rural politicians and lawyers still wedded to the America of Andrew Jackson, while the
It is true that Buchanan did have a unique relationship with his cabinet. His niece Harriet Lane was his official hostess, but his cabinet members and their wives were his real family. They visited and came to dinner frequently and provided the companionship he needed. Cobb in particular occasionally lived at the White House for weeks at a time. Along with a few like-minded congressmen and senators, they were a clan bound together by intense loyalty and a total inability or unwillingness to recognize the wisdom, integrity, or justice of any opponent or opposing position. To the end of his life, Buchanan blamed the Civil War primarily on the work of a few misguided northern fanatics. The massive northern vote for Frémont in 1856 and for Lincoln in 1860 apparently escaped his attention.