1858–59 United States Senate elections
The 1858–59 United States Senate elections were held on various dates in various states. As these U.S. Senate elections were prior to the ratification of the Seventeenth Amendment in 1913, senators were chosen by state legislatures. Senators were elected over a wide range of time throughout 1858 and 1859, and a seat may have been filled months late or remained vacant due to legislative deadlock. In these elections, terms were up for the senators in Class 2.
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22 of the 66 seats in the United States Senate (with special elections) 34 seats needed for a majority | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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Results of the elections: Democratic gain Democratic hold Republican gain Republican hold Legislature failed to elect | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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The Republican Party gained five additional seats in the Senate, but the Democrats retained their majority. That majority would erode in 1860 with the secession of the southern states leading up to the Civil War.
In Illinois, incumbent Stephen A. Douglas (D) and challenger Abraham Lincoln (R) held a series of seven debates, known as the "Lincoln–Douglas debates."