DescriptionFree state and slave state congressional districts represented in the 37th Congress.svg
English: Map of free state and slave state congressional districts holding elections for the 37th Congress. Arkansas, Florida, and South Carolina held elections previous to secession, but the winners from these districts did not take their seats.
Free state districts represented in the 37th Congress
Slave state districts represented in the 37th Congress
Slave state districts not represented in the 37th Congress holding rejected elections
Slave state districts not represented in the 37th Congress under Confederate control
Date
Source
Own work
District boundaries are from Jeffrey B. Lewis, Brandon DeVine, Lincoln Pitcher, and Kenneth C. Martis. (2013) Digital Boundary Definitions of United States Congressional Districts, 1789–2012. districts037.zip. Retrieved from https://cdmaps.polisci.ucla.edu August 1, 2025.
Data is from Michael J. Dubin. (1998) United States Congressional Elections, 1788–1997: The Official Results of the Elections of the 1st through 105th Congress. McFarland & Company. pp. 187–90.
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