| Election Name: | 1873 Iowa Senate election |
| Country: | Iowa |
| Flag Image: | Flag of Iowa (variant).svg |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 1871 Iowa Senate election |
| Previous Year: | 1871 |
| Next Election: | 1875 Iowa Senate election |
| Next Year: | 1875 |
| Seats For Election: | 23 out of 50 seats in the Iowa State Senate |
| Majority Seats: | 26 |
| Election Date: | October 14, 1873 |
| Party1: | Republican Party (United States) |
| Last Election1: | 42 |
| Seat Change1: | 6 |
| Seats After1: | 36 |
| Party2: | Democratic Party (United States) |
| Last Election2: | 8 |
| Seat Change2: | 2 |
| Seats After2: | 10 |
| Party3: | Anti-Monopoly Party (US) |
| Last Election3: | 0 |
| Seat Change3: | 4 |
| Seats After3: | 4 |
In the 1873 Iowa State Senate elections, Iowa voters elected state senators to serve in the fifteenth Iowa General Assembly. Elections were held in 23 of the state senate's 50 districts. State senators serve four-year terms in the Iowa State Senate.
The general election took place on October 14, 1873.[1]
Following the previous election, Republicans had control of the Iowa Senate with 42 seats to Democrats' eight seats.
To claim control of the chamber from Republicans, the Democrats needed to net 18 Senate seats.
Republicans maintained control of the Iowa State Senate following the 1873 general election with the balance of power shifting to Republicans holding 36 seats, Democrats having 10 seats, and four Anti-Monopoly members (a net gain of 2 seats for Democrats and 4 seats for the Anti-Monopoly Party).
| Senate District | Incumbent | Party | Elected Senator | Party | Outcome | |||
|---|---|---|---|---|---|---|---|---|
| 1st | Exum Sumner McCulloch | Dem | Henry W. Rothert | Rep | Rep Gain | |||
| 2nd | Jacob Garretson Vale | Rep | James Blakeny Pease | Anti-Monopoly | Anti-Monopoly Gain | |||
| 5th | Martin Read | Rep | Lloyd Selby | Dem | Dem Gain | |||
| 10th | Charles Beardsley | Rep | John Wilson Williams | Rep | Rep Hold | |||
| 11th | John Patterson West | Rep | John Patterson West | Rep | Rep Hold | |||
| 13th | Joseph Henry Merrill | Rep | Joseph Henry Merrill | Rep | Rep Hold | |||
| 14th | James Simpson Hurley | Rep | Hosea N. Newton | Anti-Monopoly | Anti-Monopoly Gain | |||
| 16th | Samuel McNutt | Rep | Henry Thornburgh | Dem | Dem Gain | |||
| 17th | Joseph W. Havens | Rep | Lafayette Young | Rep | Rep Hold | |||
| 21st | Benjamin Franklin Murray | Rep | Gilbert H. Wood | Anti-Monopoly | Anti-Monopoly Gain | |||
| 22nd | Hans Reimer Claussen | Rep | Jeremiah Henry Murphy | Dem | Dem Gain | |||
| Robert Lowry | Rep | |||||||
| 23rd | Alexander Baird Ireland | Rep | Nathaniel Anson Merrell | Dem | Dem Gain | |||
| 26th | James P. Ketcham | Rep | John Nicholas William Rumple | Rep | Rep Hold | |||
| 27th | Joseph Dysart | Rep | Frank T. Campbell | Rep | Rep Hold | |||
| 28th | Frank T. Campbell | Rep | Thomas Mitchell | Rep | Rep Hold | |||
| 29th | Benjamin Franklin Allen | Rep | Elias Jessup | Rep | Rep Hold | |||
| 31st | John McKean | Rep | George W. Lovell | Anti-Monopoly | Anti-Monopoly Gain | |||
| 35th | Benjamin Billings Richards | Dem | Dennis Nelson Cooley | Rep | Rep Gain | |||
| 38th | John Hooker Leavitt | Rep | John Conaway | Rep | Rep Hold | |||
| 42nd | George R. Willett | Rep | George R. Willett | Rep | Rep Hold | |||
| 44th | John E. Burke | Rep | Edward Gee Miller | Rep | Rep Hold | |||
| 48th | Charles Atkins | Rep | Hiram Bailey | Rep | Rep Hold | |||
| 50th | Newly created district | George Douglas Perkins | Rep | Rep Gain | ||||
District boundaries in the Iowa Senate were redrawn before the 1873 general election.