1856 Iowa Senate election

1856 Iowa Senate election

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21 out of 36 seats in the Iowa State Senate 19 seats needed for a majority
Majority party Minority party Third party   Party Republican Democratic Know Nothing Last election 0 17 0 Seats before 0 15[b] 0 Seats after 23[a] 12[a] 1[a] Seat change 23[c] 3 1   Fourth party   Party Whig Last election 14 Seats before 15[b] Seats after 0[a] Seat change 15[c]
President of the Iowa Senate before election Maturin L. Fisher[d] Democratic Elected President of the Iowa Senate William W. Hamilton[e] Republican

Elections in Iowa
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In the 1856 Iowa State Senate elections, Iowa voters elected state senators to serve in the sixth Iowa General Assembly. Following the expansion of the Iowa Senate from 31 to 36 seats in 1856, elections were held for 21 of the state senate's 36 seats.^[f] State senators serve four-year terms in the Iowa State Senate.

The general election took place in 1856.^[11]

Following the previous election in 1854, Democrats had control of the Iowa Senate with 17 seats to Whigs' 14 seats. However, three changes occurred during the fifth general assembly. In the first district, Democratic Senator James M. Love resigned on July 1, 1856, causing a vacancy in his seat that was filled by special election.^[12] Democrat David Trowbridge Brigham succeeded Senator Love, holding the seat for the Democrats.^[13] In the twentieth district, Democratic Senator Theophilus Bryan was originally declared the winner.^[14] However, the members of the Iowa Senate voted on January 7, 1855, to remove Senator Bryan and replace him with his Whig opponent, Senator James Cunningham Jordan, thereby flipping the seat to Whig control.^[15] In the twenty-fourth district, Democratic Senator John G. Shields died on June 25, 1856, causing a vacancy in his seat.^[16] Therefore, by election day in 1856, the Democrats held 15 seats, the Whigs held 15 seats, and one seat was vacant (the seat that had been held by Democratic Senator John Shields).

Prior to the 1856 election, nearly all Whigs switched political party affiliation to become Republicans.

To claim control of the chamber from Democrats, the Republicans needed to garner 19 Senate seats.

Republicans claimed control of the Iowa State Senate following the 1856 general election with the balance of power shifting to Republicans holding 23 seats, Democrats having 12 seats, and a lone seat for the Know Nothing Party^[g] (a net gain of 23 seats for Republicans^[c] and 1 seat for Know Nothings). This was the first time Democrats lost control of the chamber. Republican Senator William W. Hamilton was chosen as the President of the Iowa Senate for the sixth General Assembly, succeeding Democratic Senator Maturin L. Fisher in that leadership position.^[e][d]

The 1856 general election was the first in which the Iowa Senate's districts expanded to cover all the land area currently recognized as Iowa.

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