| Election Name: | 1889 Iowa Senate election |
| Country: | Iowa |
| Flag Image: | Flag of Iowa (variant).svg |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 1887 Iowa Senate election |
| Previous Year: | 1887 |
| Next Election: | 1891 Iowa Senate election |
| Next Year: | 1891 |
| Seats For Election: | 22 out of 50 seats in the Iowa State Senate |
| Majority Seats: | 26 |
| Election Date: | November 5, 1889 |
| Party1: | Republican Party (United States) |
| Last Election1: | 32 |
| Seat Change1: | 4 |
| Seats After1: | 28 |
| Party2: | Democratic Party (United States) |
| Last Election2: | 16 |
| Seat Change2: | 4 |
| Seats After2: | 20 |
| Party3: | Independent (politician) |
| Last Election3: | 2 |
| Seat Change3: | 1 |
| Seats After3: | 1 |
| Party4: | Union Labor Party (United States) |
| Last Election4: | 0 |
| Seat Change4: | 1 |
| Seats After4: | 1 |
In the 1889 Iowa State Senate elections Iowa voters elected state senators to serve in the twenty-third Iowa General Assembly. Elections were held in 22 of the state senate's 50 districts. State senators serve four-year terms in the Iowa State Senate.
A statewide map of the 50 state Senate districts in the 1889 elections is provided by the Iowa General Assembly here.
The general election took place on November 5, 1889.[1]
Following the previous election, Republicans had control of the Iowa Senate with 32 seats to Democrats' 16 seats and two Independents.
To claim control of the chamber from Republicans, the Democrats needed to net 10 Senate seats.
Republicans maintained control of the Iowa State Senate following the 1889 general election with the balance of power shifting to Republicans holding 28 seats, Democrats having 20 seats, one Independent, and one member of the Union Labor Party (a net gain of 4 seats for Democrats and 1 seat for the Union Labor Party).
| Senate District | Incumbent | Party | Elected Senator | Party | Outcome | |||
|---|---|---|---|---|---|---|---|---|
| 1st | William Gustavus Kent | Dem | William Gustavus Kent | Dem | Dem Hold | |||
| 7th | Talton Embrey Clark | Rep | George Willard Perkins | Rep | Rep Hold | |||
| 9th | William W. Dodge | Dem | William W. Dodge | Dem | Dem Hold | |||
| 10th | John S. Woolson | Rep | John S. Woolson | Rep | Rep Hold | |||
| 12th | James Dooley | Dem | Joel Stewart | Dem | Dem Hold | |||
| 13th | Joseph G. Hutchison | Rep | Peter G. Ballingall | Dem | Dem Gain | |||
| 18th | Lafayette Young | Rep | William Fiske Cleveland | Dem | Dem Gain | |||
| 20th | Samuel Tyler Chesebro | Dem | John M. Gobble | Dem | Dem Hold | |||
| 21st | William O. Schmidt | Dem | William O. Schmidt | Dem | Dem Hold | |||
| 22nd | Patrick Bernard Wolfe | Dem | Patrick Bernard Wolfe | Dem | Dem Hold | |||
| 29th | Malcolm P. Doud | Rep | Perry Engle | Union Labor | Union Labor Gain | |||
| 30th | Conduce H. Gatch | Rep | Conduce H. Gatch | Rep | Rep Hold | |||
| 34th | Lemuel Rose Bolter | Dem | Lemuel Rose Bolter | Dem | Dem Hold | |||
| 35th | William J. Knight | Dem | James Hannibal Shields | Dem | Dem Hold | |||
| 37th | Nicholas F. Weber | Rep | William Callum Smith | Rep | Rep Hold | |||
| 38th | Mathies Parrott | Rep | Mathies Parrott | Rep | Rep Hold | |||
| 39th | Lewis S. Hanchett | Independent | Lewis S. Hanchett | Rep | Rep Gain | |||
| 41st | Joseph Henry Sweney | Rep | Jefferson Fern Clyde | Rep | Rep Hold | |||
| 42nd | Samuel Ambrose Converse | Rep | Ansel Kinne Bailey | Rep | Rep Hold | |||
| 44th | Robert George Reiniger | Rep | Robert George Reiniger | Rep | Rep Hold | |||
| 45th | Alfred Nelson Poyneer | Rep | Jacob J. Mosnat | Dem | Dem Gain | |||
| 48th | John Kelsey Deal | Rep | Thomas Rich | Dem | Dem Gain | |||
| 50th | Abraham Oscar Garlock | Rep | Edgar Eugene Mack | Rep | Rep Hold | |||
Source:[2]