|Iowa General Assembly|
New session started
|January 9, 2017|
President pro Tempore
Minority parties 
Length of term
|Authority||Legislative Department, Section 3, Iowa Constitution|
|Salary||$25,000/year + per diem|
|November 8, 2016|
|November 6, 2018|
|Redistricting||Legislative Service Agency with legislative approval|
|State Senate Chamber|
Iowa State Capitol
Des Moines, Iowa
|Iowa General Assembly|
The Iowa Senate is the upper house of the Iowa General Assembly, United States. There are 50 seats in the Iowa Senate, representing 50 single-member districts across the state of Iowa with populations of approximately 60,927 per constituency, as of the 2010 United States Census [update].  Each Senate district is composed of two House districts. The Senate meets at the Iowa State Capitol in Des Moines.
The President of the Senate presides over the body, whose powers include referring bills to committee, recognizing members during debate, and making procedural rulings. Unlike the more powerful Speaker of the Iowa House of Representatives, the Senate President cannot appoint committee chairmanships or shuffle committee memberships.  The Lieutenant Governor of Iowa was the presiding officer of the Senate until 1988, when an amendment to the Constitution of Iowa was passed in a referendum (effective from 1991).  The other partisan Senate leadership positions, such as the Majority and Minority leaders, are elected by their respective party caucuses to head their parties in the chamber.
The President of the Senate is Republican Charles Schneider of the 22nd District. The Majority Leader is Republican Jack Whitver of the 19th District. The Minority Leader is Democratic Janet Petersen of the 18th District.
|President of the Senate||Charles Schneider||Republican||22|
|Majority Leader||Jack Whitver||Republican||19|
|Minority Leader||Janet Petersen||Democratic||18|
|Government Oversight||Michael Breitbach||28|
|Human Resources||Mark Segebart||6|
|Labor and Business Relations||Jason Schultz||9|
|Local Government||Julian Garrett||13|
|Natural Resources and Environment||Ken Rozenboom||40|
|Rules and Administration||Jack Whitver||19|
|State Government||Roby Smith||47|
|Veterans Affairs||Mark Costello||12|
|Ways and Means||Randy Feenstra||2|
(shading indicates majority caucus)
|End of 2014 session|
|End 2016 session ||23||1|
|November 1, 2017 ||28||49||1|
|December 12, 2017 ||29||50||0|
|March 12, 2018 ||28||49||1|
|April 10, 2018 ||29||50||0|
|Latest voting share||40%||58%||2%|
- Samuel J. Kirkwood, two time Governor of Iowa (1860–64, 1876–77); two time U.S. Senator (1866–67), (1877–81); U.S. Secretary of the Interior (1881–82).
- George G. Wright, U.S. Senator from 1871 to 1877.
- Tom Vilsack, Governor of Iowa from 1999 to 2007, briefly Democratic candidate for the President of the United States in 2008, and United States Secretary of Agriculture from 2009 to 2017.
- George A. Wilson, Governor of Iowa from 1939 to 1943.
- Patty Judge, Iowa Secretary of Agriculture from 1999 to 2007, Lieutenant Governor of Iowa from 2007 to 2011
- Steve King, current U.S. House Representative, 2003–present.
- Joni Ernst, current U.S. Senator, in office since 2015.
- David Johnson (District 1) switched parties from Republican to "No Party" on June 7, 2016. 
- Deeth, John (2012-08-19). "District Of The Day 3: Iowa Senate District 49, Iowa House District 97 & 98". John Deeth Blog. Retrieved 2012-11-02.
- Deeth, John (2012-10-15). "Win or lose, Ward's death mean special election". John Deeth Blog. Retrieved 2012-11-02.
- Iowa Legislative Services Agency (2011-03-31). "First Redistricting Plan" (PDF). p. 3. Retrieved 2012-11-17.
- "The Three Branches of Government". Iowa General Assembly. Retrieved 2008-03-10.
- "The Drafting of Iowa's Constitution". Steven Cross, Iowa General Assembly. Retrieved 2008-03-10.
- Agency, Iowa Legislative Services. "Committees". www.legis.iowa.gov. Retrieved 2018-05-12.
- Republican Bill Anderson (District 3) resigned. 
- Rep. Jim Carlin (District 3) replaces Sen. Bill Anderson. 
- Manchester, Julia (March 12, 2018). "Iowa Senate majority leader steps down after video shows him kissing lobbyist". The Hill. Retrieved 12 March 2018.
- Republican Annette Sweeney (District 25) replaces Sen. Bill Dix. 
|Wikimedia Commons has media related to Iowa Senate.|
|Wikimedia Commons has media related to Iowa State Senators of the 85th General Assembly.|