BALANCE OF POWER IN THE UNITED STATES SENATE BETWEEN THE FREE AND THE SLAVE STATES
FREE.SLAVE.
Pennsylvania. Delaware. The original thirteen states.
New Jersey. Georgia.
Connecticut. Maryland.
Massachusetts. South Carolina.
New Hampshire. Virginia.
New York. North Carolina.
Rhode Island.

7 6

Vermont, 1791.

Kentucky, 1792.
Ohio, 1802. Tennessee, 1796.
Indiana, 1816. Louisiana, 1812.
Illinois, 1818. Mississippi, 1817
Alabama, 1819.

11 11 The Missouri Compromise, 1820.
Maine, 1820. Missouri, 1821.
Arkansas, 1836.

12 13 First slave state majority.
Michigan, 1837. Florida, 1845.
Iowa, 1846. Texas, 1845. Last slave state.
Wisconsin, 1848.

15 15
California, 1850. Compromise of 1850.

16 15 Kansas-Nebraska Bill, 1854. The last chance for the South to win.
Minnesota, 1858.
Oregon, 1859.
Kansas, 1861.

19 15 Secession and the Civil War.