Michael Vorenberg, "Judd, Norman Buel," American National Biography Online, February 2000, http://www.anb.org/articles/04/04-00587.html.
Judd and his faction of Independent Democrats in the Illinois State Senate held the balance of power in the election of a U.S. senator in 1855. He and three other Independent Democrats decided not to support Abraham Lincoln for the position, mostly because of Lincoln's Whig affiliation. When Lincoln saw that he might be defeated, he threw his support to the anti-Nebraska Democrat Lyman Trumbull, the ultimate victor and a friend of Judd's. By 1856 Judd had become a Republican.
"Judd, Norman Buel," Biographical Directory of the United States Congress, 1774 to Present, http://bioguide.congress.gov/scripts/biodisplay.pl?index=J000277.
JUDD, Norman Buel, (grandfather of Norman Judd Gould), a Representative from Illinois; born in Rome, N.Y., January 10, 1815; received a liberal schooling; studied law; was admitted to the bar in 1836 and commenced practice in Rome, N.Y.; moved to Chicago, Ill., in 1836 and continued the practice of his profession; city attorney 1837-1839; member of the State senate 1844-1860; delegate to the Republican National Convention in 1860; appointed Minister Plenipotentiary to Berlin by President Lincoln March 6, 1861, and served until 1865; elected as a Republican to the Fo