|Incumbent||Party||Office||Reason for not seeking re-election|
|Senator Jon L. Kyl||Republican||Senate Class 1||Open Seat. 10 February 2011: Announced retirement|
|Governor Janice K. "Jan" Brewer||Republican||Governor||Open Chair. Term Limit. At term limit|
|Congressman Ben Quayle||Republican||House CD 3||Lost Primary / No Longer Running. 28 August 2012 Primary.|
Congressman Quayle is a candidate for re-election in the new CD # 6.
|Congressman Jeff Flake||Republican||House CD 6||Open Seat. 14 February 2011: Announced that he will run for the U.S. Class 1 Senate Seat in 2012.|
|Governor Mike Beebe||Democratic||Governor||Open Chair. Term Limit. At term limit|
|Congressman Michael Avery "Mike" Ross||Democratic||House CD 4||Open Seat. 25 July 2011: "...I have decided not to seek a seventh term to the United States House..."|
|Congressman Walter William "Wally" Herger, Jr.||Republican||House CD 2||Open Seat. 10 January 2012: Announced retirement.|
|Congressman Lynn C. Woolsey||Democratic||House CD 6||Open Seat. 27 June 2011: Congressman Woolsey announced her retirement.|
|Congressman Dennis A. Cardoza||Democratic||House CD 18||Vacant Office. 20 October 2011: Announced he will not seek re-election.|
14 August 2012: Resigned citing family needs. Due to the timing of the resignation, there will be no special election to fill the vacant seat.
|Congressman Elton Gallegly||Republican||House CD 24||Open Seat. 6 January 2012: Congressman Gallegly announces that he will not seek re-election. "The decision to step aside at this time did not come lightly. But in the end, Janice and I decided now was the right time to begin the next chapter in our lives."|
|Congressman David Dreier||Republican||House CD 26||Open Seat. 29 February 2012: "... the American people are asking for change in Congress, and so I'm announcing today that I will leave the Congress at the end of this year..."|
|Congressman Jerry Lewis||Republican||House CD 41||Open Seat. 12 January 2012: "After months of consultation with loved ones and family, my wife Arlene and I have decided to retire from public life."|
|Congressman Bob Filner||Democratic||House CD 51||Vacant Office. 9 June 2011: Candidate for Mayor of San Diego in 2012.|
6 November 2012: Elected Mayor of San Diego.
3 December 2012: Resigned prior to being sworn in as Mayor of San Diego.
|Senator Joseph I. "Joe" Lieberman||Independent Democrat||Senate Class 1||Open Seat. 19 January 2011: Announced that he will not seek re-election.|
|Congressman Christopher Scott "Chris" Murphy||Democratic||House CD 5||Open Seat. 20 January 2011: Announced he is running for the U.S. Senate Class 1 seat in 2012.|
|Congressman Clifford Bundy "Cliff" Stearns||Republican||House CD 6||Lost Primary / No Longer Running. Congressman Stearns is a candidate for re-election in the new CD # 3.|
|Congressman Connie Mack, IV||Republican||House CD 14||Open Seat. 25 March 2011: Congressman Mack WILL NOT be a candidate for the Senate in 2011.|
26 October 2011: Update- Media reports state Congressman Mack WILL be a candidate for the Senate in 2011.
28 November 2011: Announced his candidacy for the Florida Class 1 Senate seat in 2012.
|Congressman Sandra "Sandy" Adams||Republican||House CD 24||Lost Primary / No Longer Running. Lost 14 August Primary|
Congressman Adams was a candidate for re-election in the new CD # 7.
|Senator Daniel Kahikina Akaka||Democratic||Senate Class 1||Open Seat. 2 March 2011: Announced retirement.|
|Congressman Mazie K. Hirono||Democratic||House CD 2||Open Seat. 19 May 2011: Announced her candidacy for the U.S. Senate Class 1 Seat in 2012.|
|Congressman Jesse Louis Jackson, Jr.||Democratic||House CD 2||Vacant Office. 20 March 2012 Primary.|
25 June 2012: the Congressman's office announced he was undergoing treatment for exhaustion and has been on a medical leave of absence retroactive to 10 June.
27 June 2012: vague public comments by the Congressman's wife, Chicago City Alderman Sandi Jackson, and Chicago Mayor Rahm Emanuel today have led to much media speculation that the Congressman's condition might well be rather serious.
5 July 2012: a statement issued by his staff today notes that the Congressman's "medical condition is more serious than we thought and initially believed" and that "he has grappled with certain physical and emotional ailments privately for a long period of time"; the statement went on to note that he will require "extended in-patient treatment as well as continuing medical treatment thereafter".
27 July 2012: Reports state that Congressman Jackson has been admitted to the Rochester Minnesota Mayo Clinic for depression and gastrointestinal ailments.
13 August 2012: The Mayo Clinic has confirmed that Congressman Jackson is being treated at their facility for Bipolar Disorder II. It was thought that- based on statements by an aide last week- the Congressman might be back in his District for the first time in some two months sometime later this week; the Congressman's staff has not publicly commented on the Mayo Clinic's announcement.
7 September 2012: Media reports state that Congressman Jackson has left the Mayo Clinic and is back home.
21 November 2012: Resigned stating "... I hereby resign as a member of the United States House of Representatives, effective today, in order to focus on restoring my health."
|Congressman Jerry F. Costello||Democratic||House CD 12||Open Seat. 4 October 2011: Announced retirement.|
|Congressman Timothy V. "Tim" Johnson||Republican||House CD 15||Open Seat. 4 April 2012: Announce his retirement.|
20 March 2012: Renominated by Primary for re-election in the new CD # 13.
|Congressman Donald A. Manzullo||Republican||House CD 16||Lost Primary / No Longer Running. 20 March 2012|
|Senator Richard G. Lugar||Republican||Senate Class 1||Lost Primary / No Longer Running. Defeated in 8 May 2012 Primary|
|Governor Mitchell E. "Mitch" Daniels, Jr.||Republican||Governor||Open Chair. Term Limit|
|Congressman Joseph Simon "Joe" Donnelly||Democratic||House CD 2||Open Seat. 7 May 2011: Candidate for the Class 1 Senate Seat in 2012|
|Congressman Danny L. "Dan" Burton||Republican||House CD 5||Open Seat. 31 January 2012: Announced retirement.|
|Congressman Mike Pence||Republican||House CD 6||Open Seat. 5 May 2011: Candidate for Governor in 2012|
|Governor Steven L. "Steve" Beshear||Democratic||Governor||Open Chair. Term Limit. At Term Limit|
|Governor Piyush "Bobby" Jindal||Republican||Governor||Open Chair. Term Limit|
|Senator Olympia J. Snowe||Republican||Senate Class 1||Open Seat. 28 February 2012: "After an extraordinary amount of reflection and consideration, I am announcing today that I will not be a candidate for re-election to the United States Senate."|
|Governor Martin O'Malley||Democratic||Governor||Open Chair. Term Limit|
|Senator John F. Kerry||Democratic||Senate Class 2||Open Seat. 15 December 2012: Media reports state that President Obama will nominate Senator John F. Kerry for Secretary of State.|
21 December 2012: Officially nominated.
|Governor Deval L. Patrick||Democratic||Governor||Open Chair. March 2012: Announced he is not running for re-election in 2014.|
|Congressman John Walter Olver||Democratic||House CD 1||Open Seat. 26 October 2011: "Therefore, I will retire from the House of Representatives at the conclusion of the current [112th] Congress."|
|Congressman Barney Frank||Democratic||House CD 4||Open Seat. 28 November 2011: Congressman Frank announced that he will not run for re-election.|
|Congressman Dale E. Kildee||Democratic||House CD 5||Open Seat. 15 July 2011: "After careful consideration, I have decided to retire at the end of this term to enjoy more time with my wife, three children and ten grandchildren..."|
|Congressman Hansen Clarke||Democratic||House CD 13||Lost Primary / No Longer Running. Lost 7 August 2012 Primary--|
Congressman Clarke was a candidate for re-election in the new CD # 14.
|Congressman William Todd "Todd" Akin||Republican||House CD 2||Open Seat. 17 May 2011: Candidate for the Senate Class 1 seat in 2012.|
|Congressman John Russell "Russ" Carnahan||Democratic||House CD 3||Lost Primary / No Longer Running. Lost 7 August 2012 Primary--Congressman Carnahan was a candidate for re-election in the new CD #1.|
|Congressman Jo Ann Emerson||Republican||House CD 8||Open Seat. 7 August 2012 Primary.|
6 November 2012: Re-elected.
3 December 2012: Announced her resignation effective in February 2013 when she assumes the role of President and Chief Executive Officer of the National Rural Electric Cooperative Association.
|Governor Brian Schweitzer||Democratic||Governor||Open Chair. Term Limit. At Term Limit|
|Congressman Dennis Ray "Denny" Rehberg||Republican||House At-Large||Open Seat. 1 February 2011: Media reports Congressman Rehberg is running for the Class 1 Senate Seat in 2012.|
|Senator E. Benjamin "Ben" Nelson||Democratic||Senate Class 1||Open Seat. 27 December 2011: Media reports indicate that Senator Nelson will announce his retirement from the Senate at the end of his current term (which ends at Noon, 3 January 2013)|
|Governor Dave Heineman||Republican||Governor||Open Chair. Term Limit. At term limit|
|Congressman Shelley Berkley||Democratic||House CD 1||Open Seat. 14 April 2011: Announced she is running for the Senate Class 1 seat in 2012.|
|Governor John H. Lynch||Democratic||Governor||Open Chair. 15 September 2011: Announced he will not run for re-election.|
|Congressman Steven R. "Steve" Rothman||Democratic||House CD 9||Lost Primary / No Longer Running|
|Senator Jesse F. "Jeff" Bingaman, Jr.||Democratic||Senate Class 1||Open Seat. 18 February 2011: Announced retirement.|
|Congressman Martin Trevor Heinrich||Democratic||House CD 1||Open Seat. 2 April 2011: Congressman Heinrich announced he is running for the Class 1 Senate Seat in 2012.|
|Congressman Gary L. Ackerman||Democratic||House CD 5||Open Seat. 15 March 2012: Announced he will not seek re-election.|
|Congressman Robert L. "Bob" Turner||Republican||House CD 9||Open Seat. 13 March 2012: Congressman Turner is a candidate for the U.S. Senate Class 1 seat.|
26 June 2012: Congressman Turner lost the Senate primary.
|Congressman Edolphus "Ed" Towns||Democratic||House CD 10||Open Seat. 15 April 2012: Media reports indicate a withdrawal.|
|Congressman Maurice D. Hinchey||Democratic||House CD 22||Open Seat. 18 January 2012: Media reports state that Congressman Hinchey will retire due to health concerns.|
|Governor Beverly Eaves "Bev" Perdue||Democratic||Governor||Open Chair. 26 January 2012: Announced that she will not seek reelection in 2012.|
|Congressman Suellen "Sue" Myrick||Republican||House CD 9||Open Seat. 7 February 2012: "After thoughtful discussion with my family, I have decided not to run for another term in Congress."|
|Congressman Joseph Heath "Heath" Shuler||Democratic||House CD 11||Open Seat. 2 February 2012: Media reports state Congressman Shuler will not seek re-election.|
|Congressman Ralph Bradley "Brad" Miller||Democratic||House CD 13||Open Seat. |
26 January 2012: "I will not seek another term in Congress ... I knew Republicans in the legislature would dismantle the district that I have represented for the last decade, and they did."
|Senator Gaylord Kent "Kent" Conrad||Democratic||Senate Class 1||Open Seat. 18 January 2011: Announced retirement.|
|Congressman Richard A. "Rick" Berg||Republican||House At-Large||Open Seat. 16 May 2011: Congressman Berg announced that he will run for the Senate Class 1 Seat in 2012.|
|Congressman Jeannette H. "Jean" Schmidt||Republican||House CD 2||Lost Primary / No Longer Running. 6 March 2012|
|Congressman Steve C. Austria||Republican||House CD 7||Open Seat. 31 December 2011: Retiring|
|Congressman Dennis J. Kucinich||Democratic||House CD 10||Lost Primary / No Longer Running. 6 March 2012: Congressman Kucinich was a candidate for re-election in the new CD # 9.|
|Congressman Steven C. "Steve" LaTourette||Republican||House CD 14||Open Seat. 6 March 2012: Renominated by Primary. 30 July 2012: Media reports indicate the Congressman will not run for re-election. 31 July 2012: Congressman LaTourette confirmed his retirement. The Republican Party will select a replacement nominee.|
|Senator Tom Coburn||Republican||Senate Class 3||Open Seat. 16 August 2011: Announced he would not run for re-election in 2016: ".. I'm not running again..."|
|Congressman John Sullivan||Republican||House CD 1||Lost Primary / No Longer Running. 26 June 2012 Primary|
|Congressman David Daniel "Dan" Boren||Democratic||House CD 2||Open Seat. 7 June 2011: Media reports state Congressman Boren plans to retire. However, he filed a Statement of Candidacy with the FEC on 13 December 2011.|
|Congressman Jason Altmire||Democratic||House CD 4||Lost Primary / No Longer Running. Congressman Altmire was a candidate for re-election in the new CD # 12.|
|Congressman Timothy T. "Tim" Holden||Democratic||House CD 17||Lost Primary / No Longer Running|
|Congressman Todd R. Platts||Republican||House CD 19||Open Seat. 17 January 2012: Announced retirement|
|Senator James W. "Jim" DeMint||Republican||Senate Class 3||Open Seat. 30 August 2011: Announced he will not run for re-election in 2016.|
6 December 2012: Resigned effective January 2013 to lead the Heritage Foundation. "It's been an honor to serve the people of South Carolina in the United States Senate for the past eight years, but now it's time for me to pass the torch to someone else and take on a new role in the fight for America's future." Governor Nikki Randhawa Haley (Republican) will appoint a replacement to serve until a special election is called.
17 December 2012: Media reports indicate Congressman Timothy E. "Tim" Scott (Republican CD 1) will be appointed by Governor Nikki Randhawa Haley (Republican) to this U. S. Senate seat.
|Congressman Timothy E. "Tim" Scott||Republican||House CD 1||Open Seat. 17 December 2012: Media reports indicate Congressman Scott will be appointed by Governor Nikki Randhawa Haley (Republican) to the U. S. Senate.|
The Congressman had been re-elected to the U. S. House on 6 November 2012. Renominated by primary on 12 June 2012 Primary.
|Senator Kay Bailey Hutchison||Republican||Senate Class 1||Open Seat. 13 January 2011: "I am announcing today that I will not be a candidate for re-election in 2012...".|
|Congressman Ronald E. "Ron" Paul||Republican||House CD 14||Open Seat. 26 April 2011: Announced he was forming a presidential exploratory committee for 2012.|
13 May 2011: Announced he is a candidate for President in 2012.
12 July 2011: Announced he will not run for re-election.
|Congressman Silvestre Reyes||Democratic||House CD 16||Lost Primary / No Longer Running. 29 May 2012 Primary|
|Congressman Charles A. Gonzalez||Democratic||House CD 20||Open Seat. 25 November 2011: Announced retirement.|
|Senator James H. "Jim" Webb, Jr.||Democratic||Senate Class 1||Open Seat. 9 February 2011: "...after much thought and consideration I have decided to return to the private sector ... and will not seek re-election in 2012."|
|Governor Robert F. "Bob" McDonnell||Republican||Governor||Open Chair. Term Limit|
|Governor Christine "Chris" Gregoire||Democratic||Governor||Open Chair. 13 June 2011: "Today, I say I will not run for a third term as governor ...."|
|Congressman Norman D. "Norm" Dicks||Democratic||House CD 6||Open Seat. 2 March 2012: Announced retirement.|
|Senator Herbert H. "Herb" Kohl||Democratic||Senate Class 1||Open Seat. 13 May 2011: Media reports say Senator Kohl will not seek re-election in 2012.|
|Congressman Tammy Baldwin||Democratic||House CD 2||Open Seat. 5 September 2011: Candidate for the U.S. Senate Class 1 Seat in 2012.|
|Office||Reason for Open Chair or Seat|
|Term Limit||Voluntary||Lost Primary||Vacant||Total|
Parties appear in parenthesis and italics when a candidate receives the endorsement of a given Party and/or official sources indicate a candidate's association with a particular Party but only where the Party in question does not appear on the actual ballot as such.
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