How many U.S. Senate seats changed party in 2016?

2 seats changed party in the 2016 Senate elections: Illinois (Republican to Democrat), New Hampshire (Republican to Democrat).

Which new senators were elected in 2016?

7 new senators won seats in 2016: Kamala Harris (Democrat-CA), Tammy Duckworth (Democrat-IL), Todd Young (Republican-IN), John Kennedy (Republican-LA), Chris Van Hollen (Democrat-MD), Catherine Cortez Masto (Democrat-NV), Maggie Hassan (Democrat-NH).

2016 U.S. Senate Elections: Results

34 Senate seats were decided on Tuesday, November 8, 2016: the 34 Class III seats. 27 incumbents kept their seats, 7 new senators were elected, and 2 seats changed party.

All cycles 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 2026 2028 2030

Seats on the ballot

34 Class III

Held going in

24 Republican · 10 Democrat

New senators

27 incumbents re-elected

Seats that changed party

IL, NH

Every Seat on the 2016 Ballot

Incumbent is whoever held the seat on election day; the result is who was sworn in for it afterwards.

State ▲	Incumbent ↕	Party ↕	Seat ↕	Since ↕	Age on Election Day ↕	Result ↕
Alabama	Richard Shelby Since 1987	Republican	Class III	1987		Re-elected
Alaska	Lisa Murkowski Since 2002 · age 59	Republican	Class III	2002	59	Re-elected
Arizona	John McCain, III Since 1987	Republican	Class III	1987		Re-elected
Arkansas	John Boozman Since 2011 · age 65	Republican	Class III	2011	65	Re-elected
California	Barbara Boxer Since 1993	Democrat	Class III	1993		Kamala Harris (Democrat)
Colorado	Michael Bennet Since 2009 · age 51	Democrat	Class III	2009	51	Re-elected
Connecticut	Richard Blumenthal Since 2011 · age 70	Democrat	Class III	2011	70	Re-elected
Florida	Marco Rubio Since 2011 · age 45	Republican	Class III	2011	45	Re-elected
Georgia	Johnny Isakson Since 2005	Republican	Class III	2005		Re-elected
Hawaii	Brian Schatz Since 2012 · age 44	Democrat	Class III	2012	44	Re-elected
Idaho	Mike Crapo Since 1999 · age 65	Republican	Class III	1999	65	Re-elected
Illinois	Mark Kirk Since 2010	Republican	Class III	2010		Tammy Duckworth (Democrat) Party change
Indiana	Daniel Coats Since 1989	Republican	Class III	1989		Todd Young (Republican)
Iowa	Chuck Grassley Since 1981 · age 83	Republican	Class III	1981	83	Re-elected
Kansas	Jerry Moran Since 2011 · age 62	Republican	Class III	2011	62	Re-elected
Kentucky	Rand Paul Since 2011 · age 53	Republican	Class III	2011	53	Re-elected
Louisiana	David Vitter Since 2005	Republican	Class III	2005		John Kennedy (Republican)
Maryland	Barbara Mikulski Since 1987	Democrat	Class III	1987		Chris Van Hollen (Democrat)
Missouri	Roy Blunt Since 2011	Republican	Class III	2011		Re-elected
Nevada	Harry Reid Since 1987	Democrat	Class III	1987		Catherine Cortez Masto (Democrat)
New Hampshire	Kelly Ayotte Since 2011	Republican	Class III	2011		Maggie Hassan (Democrat) Party change
New York	Chuck Schumer Since 1999 · age 65	Democrat	Class III	1999	65	Re-elected
North Carolina	Richard Burr Since 2005	Republican	Class III	2005		Re-elected
North Dakota	John Hoeven Since 2011 · age 59	Republican	Class III	2011	59	Re-elected
Ohio	Rob Portman Since 2011	Republican	Class III	2011		Re-elected
Oklahoma	James Lankford Since 2015 · age 48	Republican	Class III	2015	48	Re-elected
Oregon	Ron Wyden Since 1996 · age 67	Democrat	Class III	1996	67	Re-elected
Pennsylvania	Patrick Toomey Since 2011	Republican	Class III	2011		Re-elected
South Carolina	Tim Scott Since 2013 · age 51	Republican	Class III	2013	51	Re-elected
South Dakota	John Thune Since 2005 · age 55	Republican	Class III	2005	55	Re-elected
Utah	Mike Lee Since 2011 · age 45	Republican	Class III	2011	45	Re-elected
Vermont	Patrick Leahy Since 1975	Democrat	Class III	1975		Re-elected
Washington	Patty Murray Since 1993 · age 66	Democrat	Class III	1993	66	Re-elected
Wisconsin	Ron Johnson Since 2011 · age 61	Republican	Class III	2011	61	Re-elected

New Senators Elected in 2016

Kamala Harris

Democrat · California

Succeeded Barbara Boxer

Tammy Duckworth

Democrat · Illinois

Succeeded Mark Kirk (Republican)

Todd Young

Republican · Indiana

Succeeded Daniel Coats

John Kennedy

Republican · Louisiana

Succeeded David Vitter

Chris Van Hollen

Democrat · Maryland

Succeeded Barbara Mikulski

Catherine Cortez Masto

Democrat · Nevada

Succeeded Harry Reid

Maggie Hassan

Democrat · New Hampshire

Succeeded Kelly Ayotte (Republican)

About this page

Seats, incumbents and results are derived from the Senate's service records (via the congress-legislators dataset): the seats on a year's ballot are the class whose terms end the following January, plus any seat held by appointment pending a special election, and a result is recorded when the winner is sworn in. Incumbent status and candidates for the next election come from FEC candidate filings; a seat is listed as open when the FEC tags its candidates as running for a seat with no incumbent. Election day is the Tuesday after the first Monday in November. See every cycle since 1990, the seniority list and the voting analysis.