Buchanan secretly asked President-elect Lincoln to call for a national referendum on the issue of slavery, but Lincoln declined.[94]
Despite the efforts of Buchanan and others, six more slave states seceded by the end of January 1861. Buchanan replaced the departed Southern cabinet members with John Adams Dix, Edwin M. Stanton, and Joseph Holt, all of whom were committed to preserving the Union. When Buchanan considered surrendering Fort Sumter, the new cabinet members threatened to resign, and Buchanan relented. On January 5, Buchanan decided to reinforce Fort Sumter, sending the Star of the West with 250 men and supplies. However, he failed to ask Major Robert Anderson to provide covering fire for the ship, and it was forced to return North without delivering troops or supplies. Buchanan chose not to respond to this act of war, and instead sought to find a compromise to avoid secession. He received a March 3 message from Anderson, that supplies were running low, but the response became Lincoln's to make, as the latter succeeded to the presidency the next day.