The 2018 Iowa State Senate elections took place as part of the biennial 2018 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.
The primary election on June 5, 2018, determined which candidates appeared on the November 6, 2018 general election ballot. Primary election results can be obtained here.
Following the previous 2016 Iowa Senate election, Republicans flipped control of the Iowa State Senate, taking control away from the Democrats.
To reclaim control of the chamber from Republicans, the Democrats needed to net six Senate seats.
Republicans expanded their control of the Iowa State Senate following the 2018 general election, increasing their majority from 29 to 32 seats. Democrats saw their numbers dwindle from 20 to 18 seats. The lone independent member of the Iowa State Senate was replaced by a Republican as well.
Results NOTE: Only odd-numbered Iowa Senate seats were up for election in 2018, so even-numbered seats are not included here. State Senate districtIncumbent PartyElected Senator Party 1st David Johnson Ind Zach Whiting Republican 3rd Jim Carlin Rep Jim Carlin Republican 5th Tim Kraayenbrink Rep Tim Kraayenbrink Republican 7th Rick Bertrand Rep Jackie Smith Democratic 9th Jason Schultz Rep Jason Schultz Republican 11th Tom Shipley Rep Tom Shipley Republican 13th Julian Garrett Rep Julian Garrett Republican 15th Chaz Allen Dem Zach Nunn Republican 17th Tony Bisignano Dem Tony Bisignano Democratic 19th Jack Whitver Rep Jack Whitver Republican 21st Matt McCoy Dem Claire Celsi Democratic 23rd Herman Quirmbach Dem Herman Quirmbach Democratic 25th Annette Sweeney Rep Annette Sweeney Republican 27th Amanda Ragan Dem Amanda Ragan Democratic 29th Tod Bowman Dem Carrie Koelker Republican 31st William Dotzler Dem William Dotzler Democratic 33rd Rob Hogg Dem Rob Hogg Democratic 35th Wally Horn Dem Todd Taylor Democratic 37th Robert Dvorsky Dem Zach Wahls Democratic 39th Kevin Kinney Dem Kevin Kinney Democratic 41st Mark Chelgren Rep Mariannette Miller-Meeks Republican 43rd Joe Bolkcom Dem Joe Bolkcom Democratic 45th Jim Lykam Dem Jim Lykam Democratic 47th Roby Smith Rep Roby Smith Republican 49th Rita Hart Dem Chris Cournoyer Republican
Source:
Closest races Seats where the margin of victory was under 10%:
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Predictions SourceRankingAs of Governing | October 8, 2018
Detailed results Reminder: Only odd-numbered Iowa Senate seats were up for election in 2018, so even-numbered seats are not included here. 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__NOTOC__ Note: If a district does not list a primary, then that district did not have a competitive primary (i.e., there may have only been one candidate file for that district).
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
Source:
See also United States elections, 2018 United States House of Representatives elections in Iowa, 2018 Elections in Iowa
References