# List of special elections to the Iowa Senate

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vte :
Special elections to the Iowa Senate are called by the Governor of Iowa when a vacancy arises within the State Senate. If there is a vacancy in the Iowa General Assembly (i.e., the Iowa state legislature), the vacant seat must be filled by special election. If the vacancy occurs while the General Assembly is in session, the Governor must call within five days of the occurrence of the vacancy for an election as expeditiously as feasible, with a minimum 18-day notice. If the vacancy happens while the General Assembly is out of session, the special election must follow a 45-day notice, as long as the election does not coincide with a school election. All special elections must be held on a Tuesday.

## List of special elections

| District | Election Date | Predecessor | Special Election Winner |
| 39th | February 17, 1913 | Charles Gates (R) | F. P. Hagemann (D) |
| 37th | March 31, 1923 | Daniel Cady Chase (R) | William Schmedika (D) |
| 4th | February 1, 1933 | John Henry Judd (D) | Joseph E. Doze (D) |
| 29th | March 24, 1933 | Oliver Perry Myers (D) | D. Myron Tripp (D) |
| 35th | August 22, 1933 | Matt D. Cooney (D) | Howard C. Baldwin (D) |
| 45th | October 3, 1933 | Harry Cook White (D) | Richard V. Leo (R) |
| 2nd | January 17, 1944 | Sanford Zeigler (R) | Charles W. Wade (R) |
| 5th | January 17, 1944 | Stephen Ray Emerson (R) | T. M. Thompson (R) |
| 28th | January 26, 1945 | Benjamin Chase Whitehill (R) | Robert A. Rockhill (R) |
| 37th | January 6, 1947 | George Raymond Hill (R) | Rex R. Bateson (R) |
| 15th | January 10, 1963 | L. C. Shivvers (R) | Vera H. Shivvers (R) |
| 18th | June 20, 1969 | Kenneth Benda (R) | Joann Yessler Orr (D) |
| 1st | September 9, 1969 | Seeley G. Lodwick (R) | Wilson L. Davis (R) |
| 45th | October 28, 1969 | Walter B. Hammer (R) | S. J. Brownlee (R) |
| 14th | November 15, 1969 | David M. Stanley (R) | W. R. Rabedeaux (R) |
| 6th | November 18, 1969 | Charles Vernon Lisle (R) | Earl Bass (R) |
| 12th | December 16, 1969 | Joseph Flatt (R) | Glen E. Bortell (R) |
| 22nd | December 1970 | J. Donald Weimer (D) | Cloyd E. Robinson (D) |
| 47th | December 1972 | James B. Turner (R) | Richard R. Ramsey (R) |
| 10th | November 5, 1974 | Mike Blouin (D) | Robert M. "Bob" Carr (D) |
| 15th | November 2, 1976 | Steve Sovern (D) | Bob Rush (D) |
| 11th | December 28, 1976 | Richard John Norpel (D) | Steve Bisenius (R) |
| 41st | December 28, 1976 | Bill Gluba (D) | Forrest F. Ashcraft (R) |
| 36th | November 8, 1983 | Michael R. Lura (R) | John Soorholtz (R) |
| 45th | September 10, 1985 | Norman Rodgers (D) | James R. Riordan (D) |
| 34th | December 17, 1985 | John A. Neighbour (D) | John A. Peterson (D) |
| 31st | January 7, 1986 | Lowell Junkins (D) | Gene Fraise (D) |
| 13th | January 28, 1986 | Thomas A. Lind (R) | Jim Lind (R) |
| 18th | September 26, 1989 | Robert M. Carr (D) | Mike Connolly (D) |
| 12th | December 18, 1990 | Joy Corning (R) | Harry G. Slife (R) |
| 44th | December 17, 1991 | Jack Nystrom (R) | Albert Sorensen (D) |
| 12th | August 31, 1993 | Harry G. Slife (R) | Donald Redfern (R) |
| 5th | February 22, 1994 | Linn Fuhrman (R) | Mary Lou Freeman (R) |
| 25th | February 22, 1994 | Richard J. Varn (D) | Robert Dvorsky (D) |
| 26th | December 20, 1994 | Paul Pate (R) | Mary Lundby (R) |
| 13th | April 1997 | Jim Lind (R) | Patricia M. "Pat" Harper (D) |
| 8th | February 3, 1998 | James E. Black (R) | E. Thurman Gaskill (R) |
| 46th | January 12, 1999 | Patty Judge (D) | John Judge (D) |
| 43rd | June 12, 2001 | Derryl McLaren (R) | Hubert Houser (R) |
| 39th | February 19, 2002 | Jo Ann M. Johnson (R) | David G. Lord (R) |
| 10th | March 12, 2002 | Merlin Bartz (R) | Amanda Ragan (D) |
| 26th | January 14, 2003 | Steve King (R) | Steve Kettering (R) |
| 30th | February 3, 2004 | Mary Kramer (R) | Pat Ward (R) |
| 48th | January 4, 2011 | Kim Reynolds (R) | Joni Ernst (R) |
| 35th | January 18, 2011 | Larry Noble (R) | Jack Whitver (R) |
| 18th | November 8, 2011 | Swati Dandekar (D) | Liz Mathis (D) |
| 22nd | December 11, 2012 | Pat Ward (R) | Charles Schneider (R) |
| 13th | November 19, 2013 | Kent Sorenson (R) | Julian Garrett (R) |
| 12th | December 30, 2014 | Joni Ernst (R) | Mark Costello (R) |
| 45th | December 27, 2016 | Joe Seng (D) | Jim Lykam (D) |
| 3rd | December 12, 2017 | Bill Anderson (R) | Jim Carlin (R) |
| 25th | April 10, 2018 | Bill Dix (R) | Annette Sweeney (R) |
| 30th | March 19, 2019 | Jeff Danielson (D) | Eric Giddens (D) |
| 41st | January 26, 2021 | Mariannette Miller-Meeks (R) | Adrian Dickey (R) |
| 35th | January 28, 2025 | Chris Cournoyer (R) | Mike Zimmer (D) |

## Results
### 1913: District 39

Iowa Senate, District 39 Special Election, February 17, 1913 :
| Party | Party | Candidate | Votes | % |
| | Democratic | F. P. Hagemann | 2,670 | 53.50% |
| | Republican | Benjamin Boardman | 1,490 | 29.85% |
| | Progressive | Harry A. Morey | 831 | 16.65% |
| Total votes | Total votes | Total votes | 4,991 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 1923: District 37

Iowa Senate, District 37 Special Election, March 31, 1923 :
| Party | Party | Candidate | Votes | % |
| | Democratic | William Schmedika | 2,006 | 54.88% |
| | Republican | Rube McFeren | 1,649 | 45.12% |
| Total votes | Total votes | Total votes | 3,655 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 1933: District 4

Iowa Senate, District 4 Special Election, February 1, 1933 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Joseph E. Doze | 3,047 | 54.2 |
| | Republican | H. C. Condra | 2,579 | 45.8 |
| Total votes | Total votes | Total votes | 5,626 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1933: District 29

Iowa Senate, District 29 Special Election, March 24, 1933 :
| Party | Party | Candidate | Votes | % |
| | Democratic | D. Myron Tripp | 3,756 | 55.6 |
| | Republican | John E. Cross | 2,999 | 44.4 |
| Total votes | Total votes | Total votes | 6,755 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1933: District 35

Iowa Senate, District 35 Special Election, August 22, 1933 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Howard Baldwin | 936 | 100.0 |
| Total votes | Total votes | Total votes | 936 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1933: District 45

Iowa Senate, District 45 Special Election, October 3, 1933 :
| Party | Party | Candidate | Votes | % |
| | Republican | Richard V. Leo | 6,718 | 52.1 |
| | Democratic | M. W. Hyland | 6,181 | 47.9 |
| Total votes | Total votes | Total votes | 12,899 | 100.0 |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 1944: District 2

Iowa Senate, District 2 Special Election, January 17, 1944 :
| Party | Party | Candidate | Votes | % |
| | Republican | Charles W. Wade | 1,464 | 73.1 |
| | Democratic | S.C. Simmons | 540 | 26.9 |
| Total votes | Total votes | Total votes | 2,004 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1944: District 5

Iowa Senate, District 5 Special Election, January 17, 1944 :
| Party | Party | Candidate | Votes | % |
| | Republican | T.M. Thompson | 904 | 100.0 |
| Total votes | Total votes | Total votes | 904 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1945: District 28

Iowa Senate, District 28 Special Election, January 26, 1945 :
| Party | Party | Candidate | Votes | % |
| | Republican | Robert A. Rockhill | 1,783 | 72.9 |
| | Democratic | C. E. Wicklund | 663 | 27.1 |
| Total votes | Total votes | Total votes | 2,446 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1947: District 37

Iowa Senate, District 37 Special Election, January 6, 1947 :
| Party | Party | Candidate | Votes | % |
| | Republican | R. R. Bateson | 2,440 | 47.8 |
| | Democratic | Frank J. Lund | 2,258 | 44.2 |
| | Independent | William Schmedika | 409 | 8.0 |
| Total votes | Total votes | Total votes | 5,107 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1963: District 15

Iowa Senate, District 15 Special Election, January 10, 1963 :
| Party | Party | Candidate | Votes | % |
| | Republican | Vera H. Shivvers | 2,921 | 53.0 |
| | Democratic | Howard H. Myers | 2,586 | 47.0 |
| Total votes | Total votes | Total votes | 5,507 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1970: District 22

Iowa Senate, District 22 Special Election, December 1970 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Cloyd E. Robinson | 2,782 | 55.8 |
| | Republican | Jesse G. Hunter | 2,201 | 44.2 |
| Total votes | Total votes | Total votes | 4,983 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1972: District 47

Iowa Senate, District 47 Special Election, December 1972 :
| Party | Party | Candidate | Votes | % |
| | Republican | Richard Ramsey | 4,016 | 50.2 |
| | Democratic | Arlo Hullinger | 3,989 | 49.8 |
| Total votes | Total votes | Total votes | 8,005 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1974: District 10

Iowa Senate, District 10 Special Election, November 5, 1974 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Robert M. "Bob" Carr | 6,273 | 59.5 |
| | Republican | James L. Esmoil | 4,270 | 40.5 |
| Total votes | Total votes | Total votes | 10,543 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1976: District 15

Iowa Senate, District 15 Special Election, November 2, 1976 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bob Rush | 13,777 | 59.8 |
| | Republican | Andrew Gordon Holmes | 9,254 | 40.2 |
| Total votes | Total votes | Total votes | 23,031 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1976: District 11

Iowa Senate, District 11 Special Election, December 28, 1976 :
| Party | Party | Candidate | Votes | % |
| | Republican | Steve Bisenius | 3,925 | 50.8 |
| | Democratic | Maurice Hennessey | 3,800 | 49.2 |
| Total votes | Total votes | Total votes | 7,725 | 100.0 |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 1976: District 41

Iowa Senate, District 41 Special Election, December 28, 1976 :
| Party | Party | Candidate | Votes | % |
| | Republican | Forrest F. Ashcraft | 3,028 | 61.6 |
| | Democratic | Michael McDonald | 1,886 | 38.4 |
| Total votes | Total votes | Total votes | 4,914 | 100.0 |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 1983: District 36

Iowa Senate, District 36 Special Election, November 8, 1983 :
| Party | Party | Candidate | Votes | % |
| | Republican | John Soorholtz | 6,525 | 50.1 |
| | Democratic | Tom Swartz | 6,492 | 49.9 |
| Total votes | Total votes | Total votes | 13,017 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1985: District 45

Iowa Senate, District 45 Special Election, September 10, 1985 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jim R. Riordan | 6,720 | 51.2 |
| | Republican | Don Lienemann | 5,931 | 45.2 |
| | Populist | Johnny E. Vogel | 472 | 3.6 |
| Total votes | Total votes | Total votes | 13,123 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1985: District 34

Iowa Senate, District 34 Special Election, December 17, 1985 :
| Party | Party | Candidate | Votes | % |
| | Democratic | John A. Peterson | 3,709 | 60.5 |
| | Republican | Bill G. Anders | 2,423 | 39.5 |
| Total votes | Total votes | Total votes | 6,132 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1986: District 31

Iowa Senate, District 31 Special Election, January 7, 1986 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Gene Fraise | 3,972 | 55.3 |
| | Republican | Judson B. Seeley | 3,212 | 44.7 |
| Total votes | Total votes | Total votes | 7,184 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1986: District 13

Iowa Senate, District 13 Special Election, January 28, 1986 :
| Party | Party | Candidate | Votes | % |
| | Republican | Jim Lind | 5,947 | 53.5 |
| | Democratic | Steve Rapp | 5,159 | 46.5 |
| Total votes | Total votes | Total votes | 11,106 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1989: District 18

Iowa Senate, District 18 Special Election, September 26, 1989 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Mike Connolly | 4,601 | 100.0 |
| Total votes | Total votes | Total votes | 4,601 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1990: District 12

Iowa Senate, District 12 Special Election, December 18, 1990 :
| Party | Party | Candidate | Votes | % |
| | Republican | Harry Slife | 4,734 | 58.8 |
| | Democratic | Rose Angel | 3,313 | 41.2 |
| Total votes | Total votes | Total votes | 8,047 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1991: District 44

Iowa Senate, District 44 Special Election, December 17, 1991 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Albert Sorensen | 4,588 | 59.3 |
| | Republican | George Maybee | 3,143 | 40.7 |
| Total votes | Total votes | Total votes | 7,731 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 1993: District 12

Iowa Senate, District 12 Special Election, August 31, 1993 :
| Party | Party | Candidate | Votes | % |
| | Republican | Donald Redfern | 6,863 | 54.3 |
| | Democratic | Sandra Glenn | 5,776 | 45.7 |
| Total votes | Total votes | Total votes | 12,639 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1994: District 5

Iowa Senate, District 5 Special Election, February 22, 1994 :
| Party | Party | Candidate | Votes | % |
| | Republican | Mary Lou Freeman | 4,212 | 61.1 |
| | Democratic | Donald Schossow | 2,680 | 38.9 |
| Total votes | Total votes | Total votes | 6,892 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1994: District 25

Iowa Senate, District 25 Special Election, February 22, 1994 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Robert Dvorsky | 2,073 | 54.0 |
| | Republican | Rosie Dalton | 1,763 | 46.0 |
| Total votes | Total votes | Total votes | 3,836 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1994: District 26

Iowa Senate, District 26 Special Election, December 20, 1994 :
| Party | Party | Candidate | Votes | % |
| | Republican | Mary Lundby | 4,170 | 59.1 |
| | Democratic | Charlie Brown | 2,890 | 40.9 |
| Total votes | Total votes | Total votes | 7,060 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1998: District 8

Iowa Senate, District 8 Special Election, February 3, 1998 :
| Party | Party | Candidate | Votes | % |
| | Republican | E. Thurman Gaskill | 5,647 | 54.7 |
| | Democratic | Christine G. Louscher | 3,907 | 37.8 |
| | Independent | Paul Bernhard | 770 | 7.5 |
| Total votes | Total votes | Total votes | 10,324 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1999: District 46

Iowa Senate, District 46 Special Election, January 12, 1999 :
| Party | Party | Candidate | Votes | % |
| | Democratic | John Judge | 4,494 | 47.9 |
| | Republican | Claude Neill | 4,377 | 46.6 |
| | Reform | Garry Lee Klicker | 514 | 5.5 |
| Total votes | Total votes | Total votes | 9,385 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2001: District 43

Iowa Senate, District 43 Special Election, June 12, 2001 :
| Party | Party | Candidate | Votes | % |
| | Republican | Hubert Houser | 4,144 | 71.8 |
| | Democratic | John J. O'Brien | 1,630 | 28.2 |
| Total votes | Total votes | Total votes | 5,774 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2002: District 39

Iowa Senate, District 39 Special Election, February 19, 2002 :
| Party | Party | Candidate | Votes | % |
| | Republican | David G. Lord | 3,475 | 70.8 |
| | Democratic | Steve Shelley | 1,433 | 29.2 |
| Total votes | Total votes | Total votes | 4,908 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2002: District 10

Iowa Senate, District 10 Special Election, March 12, 2002 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Amanda Ragan | 6,453 | 62.8 |
| | Republican | Mary Ellen Miller | 3,554 | 34.6 |
| | Independent | Kevin Smith | 262 | 2.6 |
| Total votes | Total votes | Total votes | 10,269 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 2003: District 26

Iowa Senate, District 26 Special Election, January 14, 2003 :
| Party | Party | Candidate | Votes | % |
| | Republican | Steve Kettering | 4,461 | 59.8 |
| | Democratic | Don Mason | 3,000 | 40.2 |
| Total votes | Total votes | Total votes | 7,461 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2004: District 30

Iowa Senate, District 30 Special Election, February 3, 2004 :
| Party | Party | Candidate | Votes | % |
| | Republican | Pat Ward | 4,037 | 55.0 |
| | Democratic | Alicia Claypool | 3,073 | 41.8 |
| | Independent | Eric Kinman | 192 | 2.6 |
| | Independent | Satro Narayan | 42 | 0.6 |
| Total votes | Total votes | Total votes | 7,344 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2011: District 48

Iowa Senate, District 48 Special Election, January 4, 2011 :
| Party | Party | Candidate | Votes | % |
| | Republican | Joni Ernst | 4,990 | 67.5 |
| | Democratic | Ruth Smith | 2,407 | 32.5 |
| Total votes | Total votes | Total votes | 7,397 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2011: District 35

Iowa Senate, District 35 Special Election, January 18, 2011 :
| Party | Party | Candidate | Votes | % |
| | Republican | Jack Whitver | 4,773 | 63.5 |
| | Democratic | John Calhoun | 2,739 | 36.5 |
| Total votes | Total votes | Total votes | 7,512 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2011: District 18

Iowa Senate, District 18 Special Election, November 8, 2011 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Liz Mathis | 13,324 | 56.0 |
| | Republican | Cindy Golding | 10,322 | 43.4 |
| | Constitution | Jon Tack | 151 | 0.6 |
| Total votes | Total votes | Total votes | 23,797 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2012: District 22

Iowa Senate, District 22 Special Election, December 11, 2012 :
| Party | Party | Candidate | Votes | % |
| | Republican | Charles Schneider | 5,378 | 56.5 |
| | Democratic | Desmund Adams | 4,136 | 43.5 |
| Total votes | Total votes | Total votes | 9,514 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2013: District 13

Iowa Senate, District 13 Special Election, November 19, 2013 :
| Party | Party | Candidate | Votes | % |
| | Republican | Julian Garrett | 4,908 | 58.2 |
| | Democratic | Mark Davitt | 3,522 | 41.8 |
| Total votes | Total votes | Total votes | 8,430 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2014: District 12

Iowa Senate, District 12 Special Election, December 30, 2014 :
| Party | Party | Candidate | Votes | % |
| | Republican | Mark Costello | 3,138 | 74.7 |
| | Democratic | Steven L. Adams | 932 | 22.2 |
| | Libertarian | Don W. Brantz | 132 | 3.1 |
| Total votes | Total votes | Total votes | 4,202 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2016: District 45

Iowa Senate, District 45 Special Election, December 27, 2016 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jim Lykam | 3,803 | 73.2 |
| | Republican | Michael Gonzales | 1,315 | 25.3 |
| | Libertarian | Severin B. Gilbert | 77 | 1.5 |
| Total votes | Total votes | Total votes | 5,195 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2017: District 3

Iowa Senate, District 3 Special Election, December 12, 2017 :
| Party | Party | Candidate | Votes | % |
| | Republican | Jim Carlin | 3,707 | 54.6 |
| | Democratic | Todd Wendt | 3,083 | 45.4 |
| Total votes | Total votes | Total votes | 6,790 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2018: District 25

Iowa Senate, District 25 Special Election, April 10, 2018 :
| Party | Party | Candidate | Votes | % |
| | Republican | Annette Sweeney | 5,211 | 60.5 |
| | Democratic | Tracy Freese | 3,397 | 39.5 |
| Total votes | Total votes | Total votes | 8,608 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2019: District 30

Iowa Senate, District 30 Special Election, March 19, 2019 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Eric Giddens | 7,611 | 56.8 |
| | Republican | Walt Rogers | 5,635 | 42.1 |
| | Libertarian | Fred Perryman | 143 | 1.1 |
| Total votes | Total votes | Total votes | 13,389 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2021: District 41

Iowa Senate, District 41 Special Election, January 26, 2021 :
| Party | Party | Candidate | Votes | % |
| | Republican | Adrian Dickey | 5,091 | 55.32% |
| | Democratic | Mary Stewart | 4,111 | 44.68% |
| Total votes | Total votes | Total votes | 9,202 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2025: District 35

Iowa Senate, District 35 Special Election, January 28, 2025 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Mike Zimmer | 4,812 | 51.72% |
| | Republican | Katie Elizabeth Whittington | 4,473 | 48.08% |
| | Write-in | Write-in | 19 | 0.20% |
| Total votes | Total votes | Total votes | 9,304 | 100.0% |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |