Nope.
Quote:
First, Lincoln selected former Republican Party rivals for three of the most important cabinet positions: Senator William H. Seward of New York became the secretary of state, Governor Salmon P. Chase of Ohio became secretary of treasury, and Missouri’s elder statesman Edward Bates became the attorney general. These appointments also extended representation to crucial states from the northeast, old northwest, and border states. Next, Lincoln appointed former Democrats to build bipartisan support: Secretary of the Navy Gideon Welles, Postmaster General Montgomery Blair, and Secretary of War Edwin Stanton.