| Election Name: | 1885 Iowa Senate election |
| Country: | Iowa |
| Flag Image: | Flag of Iowa (variant).svg |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 1883 Iowa Senate election |
| Previous Year: | 1883 |
| Next Election: | 1887 Iowa Senate election |
| Next Year: | 1887 |
| Seats For Election: | 24 out of 50 seats in the Iowa State Senate |
| Majority Seats: | 26 |
| Election Date: | November 3, 1885 |
| Party1: | Republican Party (United States) |
| Last Election1: | 39 |
| Seat Change1: | 8 |
| Seats After1: | 31 |
| Party2: | Democratic Party (United States) |
| Last Election2: | 11 |
| Seat Change2: | 8 |
| Seats After2: | 19 |
In the 1885 Iowa State Senate elections Iowa voters elected state senators to serve in the twenty-first Iowa General Assembly. Elections were held in 24 of the state senate's 50 districts. State senators serve four-year terms in the Iowa State Senate.
The general election took place on November 3, 1885.[1]
Following the previous election, Republicans had control of the Iowa Senate with 39 seats to Democrats' 11 seats.
To claim control of the chamber from Republicans, the Democrats needed to net 15 Senate seats.
Republicans maintained control of the Iowa State Senate following the 1885 general election with the balance of power shifting to Republicans holding 31 seats and Democrats having 19 seats (a net gain of 8 seats for Democrats).
| Senate District | Incumbent | Party | Elected Senator | Party | Outcome | |||
|---|---|---|---|---|---|---|---|---|
| 1st | Henry W. Rothert | Rep | Joseph M. Casey | Dem | Dem Gain | |||
| 7th | Talton Embrey Clark | Rep | Talton Embrey Clark | Rep | Rep Hold | |||
| 9th | Benton J. Hall | Dem | William W. Dodge | Dem | Dem Hold | |||
| 10th | Lot Abraham | Rep | John Simson Woolson | Rep | Rep Hold | |||
| 12th | Cassius M. Brown | Rep | Joseph G. Hutchison | Rep | Rep Hold | |||
| 13th | Joseph G. Hutchison | Rep | James Dooley | Dem | Dem Gain | |||
| 18th | Cephas B. Hunt | Rep | Lafayette Young | Rep | Rep Hold | |||
| 20th | Pliny Nichols | Rep | Samuel Tyler Chesebro | Dem | Dem Gain | |||
| 21st | John Carver Bills | Rep | William O. Schmidt | Dem | Dem Gain | |||
| 22nd | Wickliffe A. Cotton | Rep | Patrick Bernard Wolfe | Dem | Dem Gain | |||
| 29th | Egbert C. Sudlow | Rep | Malcolm P. Doud | Rep | Rep Hold | |||
| 30th | Hiram Ypsilanti Smith | Rep | Conduce H. Gatch | Rep | Rep Hold | |||
| 31st | John Dudley Gillett | Rep | John Scott | Rep | Rep Hold | |||
| 32nd | Enoch W. Eastman | Rep | Myron Underwood | Rep | Rep Hold | |||
| 34th | Thomas M. C. Logan | Rep | Lemuel Rose Bolter | Dem | Dem Gain | |||
| 35th | Julius Kingman Graves | Rep | William J. Knight | Dem | Dem Gain | |||
| 37th | John L. Kamrar | Rep | Nicholas F. Weber | Rep | Rep Hold | |||
| 38th | Herman C. Hemenway | Rep | Mathies Parrott | Rep | Rep Hold | |||
| 40th | William Larrabee | Rep | Willard Chauncey Earle | Dem | Dem Gain | |||
| 42nd | Henry A. Baker | Rep | Theodore Weld Burdick | Rep | Rep Hold | |||
| 44th | Chapman A. Marshall | Rep | Robert George Reiniger | Rep | Rep Hold | |||
| 45th | Alfred Nelson Poyneer | Rep | Alfred Nelson Poyneer | Rep | Rep Hold | |||
| 48th | John J. Russell | Rep | John Kelsey Deal | Rep | Rep Hold | |||
| 50th | Gifford Simeon Robinson | Rep | Gifford Simeon Robinson | Rep | Rep Hold | |||
Source:[2]