| Election Name: | 1978 Iowa Senate election |
| Country: | Iowa |
| Flag Image: | Flag of Iowa (variant).svg |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 1976 Iowa Senate election |
| Previous Year: | 1976 |
| Next Election: | 1980 Iowa Senate election |
| Next Year: | 1980 |
| Seats For Election: | 25 out of 50 seats in the Iowa State Senate |
| Majority Seats: | 26 |
| Election Date: | November 7, 1978 |
| Leader1: | Calvin Hultman |
| Party1: | Republican Party (United States) |
| Leaders Seat1: | 49th |
| Last Election1: | 24 |
| Seats Before1: | 24 |
| Seat Change1: | 4 |
| Seats After1: | 28 |
| Leader2: | George Kinley |
| Party2: | Democratic Party (United States) |
| Leaders Seat2: | 34th |
| Last Election2: | 26 |
| Seats Before2: | 26 |
| Seat Change2: | 4 |
| Seats After2: | 22 |
| Majority Leader | |
| Before Election: | George Kinley |
| Before Party: | Democratic |
| After Election: | Calvin Hultman |
| After Party: | Republican |
The 1978 Iowa State Senate elections took place as part of the biennial 1978 United States elections. Iowa voters elected state senators in half of the state senate's districts—the 25 odd-numbered state senate districts. State senators serve four-year terms in the Iowa State Senate, with half of the seats up for election each cycle. A statewide map of the 50 state Senate districts in the year 1978 is provided by the Iowa General Assembly here.
The primary election on June 6, 1978 determined which candidates appeared on the November 7, 1978 general election ballot. Primary election results can be obtained here.[1] General election results can be obtained here.[2]
Following the previous election in 1976, Democrats had control of the Iowa state Senate with 26 seats to Republicans' 24 seats.
To take control of the chamber from Democrats, the Republicans needed to net 2 Senate seats.
Republicans flipped control of the Iowa State Senate following the 1978 general election, with Republicans claiming 28 seats and Democrats falling to 22 seats after the election (a net gain of 4 seats for the Republicans).
Source:[3]
| align=center | District 1 • District 3 • District 5 • District 7 • District 9 • District 11 • District 13 • District 15 • District 17 • District 19 • District 21 • District 23 • District 25 • District 27 • District 29 • District 31 • District 33 • District 35 • District 37 • District 39 • District 41 • District 43 • District 45 • District 47 • District 49 |