|Incumbent||Party||Office||Reason for not seeking re-election|
|Congressman Bradley Roberts Byrne||Republican||House CD 1||Open Seat. 20 February 2019: Announced he is running for the Class 2 Senate Seat in 2020.|
|Congressman Martha Roby||Republican||House CD 2||Open Seat. 26 July 2019: Not seeking election in 2020. "While my name will not be on the ballot in 2020...."|
|Governor Doug Ducey||Republican||Governor||Open Chair. Term Limit. At Term Limit|
|Governor Asa Hutchinson||Republican||Governor||Open Chair. Term Limit. At Term Limit|
|Congressman Paul Cook||Republican||House CD 8||Open Seat. 17 September 2019: Not running for re-election. Running for San Bernardino County Supervisor.|
|Congressman Katherine Lauren "Katie" Hill||Democratic||House CD 25||Vacant Office. 27 October 2019: "It is with a broken heart that today I announce my resignation from Congress. This is the hardest thing I have ever had to do, but I believe it is the best thing for my constituents, my community, and our country."|
1 November 2019: Officially resigned.
|Congressman Duncan Duane Hunter||Republican||House CD 50||Open Seat. 2 December 2019: Will plead guilty re: misuse of campaign funds; and reportedly will leave Congress.|
3 December 2019: Pleaded guilty to misuse campaign funds.
6 December 2019: "Shortly after the Holidays, I will resign from Congress. It has been an honor to serve the people of California's 50th District...."
|Congressman Susan A. Davis||Democratic||House CD 53||Open Seat. 4 September 2019: "I will not seek another term in Congress."|
|Congressman Theodore Scott "Ted" Yoho||Republican||House CD 3||Open Seat. 10 December 2019: "I am announcing my retirement from Congress at the end of this session ... I will not seek re-election in the upcoming election."|
|Congressman Francis Rooney||Republican||House CD 19||Open Seat. 19 October 2019: Will not run for a 3rd term.|
|Senator John Hardy "Johnny" Isakson||Republican||Senate Class 3||Open Seat. 28 August 2019: Regarding his battle with Parkinson's-- "After much prayer and consultation with my family and my doctors, I have made the very tough decision to leave the U.S. Senate at the end of this year. I have informed Georgia Governor Brian Kemp today that I will resign my Senate seat effective December 31, 2019...."|
Governor Brian Porter Kemp (Republican) will appoint a replacement to fill the seat until a special election is held for the remaining 2 years of the term.
19 November 2019: Everyone who applied [to the Governor] for Johnny Isakson's Senate seat from AJC.
29 November 2019: Media reports indicate Governor Brian Porter Kemp (Republican) will appoint Kelly Loeffler (Republican).
4 December 2019: Governor Brian Porter Kemp (Republican) appoints Kelly Loeffler (Republican) to fill the seat once it becomes vacant.
|Congressman William Robert "Rob" Woodall, III||Republican||House CD 7||Open Seat. 7 February 2019: "... I have decided not to seek reelection in 2020."|
|Congressman John Thomas "Tom" Graves, Jr.||Republican||House CD 14||Open Seat. 5 December 2019: "Today I announced to my friends and fellow Georgians that I will not be seeking re-election to the U.S. House of Representatives in 2020."|
|Governor David Yutaka Ige||Democratic||Governor||Open Chair. Term Limit|
|Congressman Tulsi Neil Gabbard||Democratic||House CD 2||Open Seat. 24 October 2019: "I will not be seeking reelection to Congress in 2020. I humbly ask for your support for my candidacy for President of the United States."|
|Congressman John M. Shimkus||Republican||House CD 15||Open Seat. 30 August 2019: "...now is the time for me to announce that I will not be seeking reelection...."|
|Congressman Peter J. Visclosky||Democratic||House CD 1||Open Seat. 6 November 2019: "On November 6th, 35 years ago today, I was elected to serve as Indiana’s First District U.S. Representative. Today, I announce that I will not seek re-election in 2020...."|
|Congressman Susan W. Brooks||Republican||House CD 5||Open Seat. 14 June 2019: "... I will retire as U. S. Representative for the 5th District of Indiana at the end of my current term."|
|Congressman David Wayne "Dave" Loebsack||Democratic||House CD 2||Open Seat. 12 April 2019: Announced his retirement.|
|Senator Pat Roberts||Republican||Senate Class 2||Open Seat. 4 January 2019: "I will not be a candidate in 2020 for a fifth Senate term."|
|Congressman Roger W. "Doc" Marshall||Republican||House CD 1||Open Seat. 7 September 2019: Running for the U.S. Senate Class 2 seat in 2020.|
|Governor John Bel Edwards||Democratic||Governor||Open Chair. Term Limit. At Term Limit|
|Governor Lawrence J. "Larry" Hogan, Jr.||Republican||Governor||Open Chair. Term Limit|
|Congressman Elijah E. Cummings||Democratic||House CD 7||Vacant Office. 17 October 2019: Passed away at Johns Hopkins Hospital due to complications concerning longstanding health challenges.|
|Congressman Joseph Patrick "Joe" Kennedy, III||Democratic||House CD 4||Open Seat. 26 August 2019: Filed with the FEC to run for the U.S. Senate in 2020.|
21 September 2019: "I'm running for US Senate."
|Congressman Seth W. Moulton||Democratic||House CD 6||Open Seat. 22 April 2019: Running for President in 2020- "I'm running for President to build ...."|
22 April 2019: Filed FEC MISCELLANEOUS TEXT (FEC Form 99): "As of April 22, 2019, Seth Moulton is no longer a candidate in the election identified in the FEC Form 2, Statement of Candidacy, that he filed with the Commission on December 10, 2018 [Candidate for MA House CD 6 -Ed]. He is no longer actively seeking nomination or election to such office, and has ceased to conduct campaign activities with respect to the aforementioned election."
26 April 2019: We have reports that the Congressman will run for re-election if he does not win the Democratic Presidential nomination.
23 August 2019: "Today, I want to use this opportunity, with all of you here, to announce that I am ending my campaign for president...." He will run for re-election to the U.S. House.
|Congressman Paul Mitchell, III||Republican||House CD 10||Open Seat. 24 July 2019: "I have decided I will not seek to continue to represent Michigan’s 10th District next term. After serving out the remainder of the 116th Congress – I will return to my family and our small farm."|
|Governor Steve Bullock||Democratic||Governor||Open Chair. Term Limit. At term limit.|
14 May 2019: "I'm Steve Bullock and I'm running for President."
|Congressman Greg Gianforte||Republican||House At-Large||Open Seat. 7 June 2019: Filed to run for Governor.|
|Governor J. Peter "Pete" Ricketts||Republican||Governor||Open Chair. Term Limit. At Term Limit|
|Senator Tom Udall||Democratic||Senate Class 2||Open Seat. 25 March 2019: "... I'm announcing today that I won’t be seeking re-election next year."|
|Congressman Ben Ray Luján||Democratic||House CD 3||Open Seat. 1 April 2019: Congressman Luján declared he would run for the Class 2 Senate Seat in 2020.|
|Congressman Peter T. "Pete" King||Republican||House CD 2||Open Seat. 11 November 2019: "I have decided not to be a candidate for re-election to Congress in 2020. I made this decision after much discussion .... The prime reason for my decision was that after 28 years of spending 4 days a week in Washington, D.C., it is time to end the weekly commute ...."|
|Congressman José Enrique Serrano||Democratic||House CD 15||Open Seat. 25 March 2019: "Today, I am announcing that I am living with Parkinson's disease. After my diagnosis, I initially planned to continue my work representing the people of the South Bronx far ... over the last few months I've come to the realization that Parkinson’s will eventually take a toll, and that I cannot predict its rate of advancement. Because of this uncertainty, I do not intend to seek re-election in 2020 ...."|
|Congressman Nita M. Lowey||Democratic||House CD 17||Open Seat. 10 October 2019: "After 31 years in the United States Congress, representing the people of Westchester, Rockland, Queens and the Bronx, I have decided not to seek re-election in 2020...."|
|Congressman Christopher Carl "Chris" Collins||Republican||House CD 27||Vacant Office. 30 September 2019: Congressman Chris Collins submitted his resignation, effective 1 October. On 1 October he pleaded guilty to conspiracy to commit securities fraud and lying to the FBI.|
|Senator Richard Mauze Burr||Republican||Senate Class 3||Open Seat|
|Congressman George Edward Bell Holding||Republican||House CD 2||Open Seat. 6 December 2019: "And so it is with regret that I announce I will not be a candidate for Congress this election."|
|Congressman Gregory Paul "Greg" Walden||Republican||House CD 2||Open Seat. 28 October 2019: "... the time has come to pursue new challenges and opportunities ... I will not seek re-election to the U.S. House of Representatives, nor election to any other office ..."|
|Governor Thomas W. "Tom" Wolf||Democratic||Governor||Open Chair. Term Limit|
|Governor Gina Marie Raimondo||Democratic||Governor||Open Chair. Term Limit. At Term Limit|
|Senator Lamar Alexander||Republican||Senate Class 2||Open Seat. 18 December 2018: "I will not be a candidate for re-election to the United States Senate in 2020."|
|Congressman K. Michael "Mike" Conaway||Republican||House CD 11||Open Seat. 30 July 2019: Retiring.|
|Congressman William McClellan "Mac" Thornberry||Republican||House CD 13||Open Seat. 30 September 2019: "I will not be a candidate for reelection in the 2020 election."|
|Congressman William "Bill" Flores||Republican||House CD 17||Open Seat. 4 September 2019: "After much prayer over the past few days and following conversations with my wife, Gina ... I have decided that my current term will be my last...."|
|Congressman Peter Graham "Pete" Olson||Republican||House CD 22||Open Seat. 25 July 2019: Announced that he will not run for re-election. "... I have decided to not seek re-election."|
|Congressman William "Will" Hurd||Republican||House CD 23||Open Seat. 1 August 2019: "I have made the decision to not seek reelection for the 23rd Congressional District of Texas...."|
|Congressman Kenny Ewell Marchant||Republican||House CD 24||Open Seat. 5 August 2019: "It is time for me to announce that I will not seek another term as Congressman...."|
|Governor Gary Richard Herbert||Republican||Governor||Open Chair. Retiring at the end of this term.|
|Congressman Robert William "Rob" Bishop||Republican||House CD 1||Open Seat. 29 July 2019: Retiring.|
|Congressman Dennis "Denny" Heck||Democratic||House CD 10||Open Seat. 4 December 2019: "Today, I announce my retirement from a career in public service that began over forty years ago."|
|Congressman Frank James "Jim" Sensenbrenner, Jr.||Republican||House CD 5||Open Seat. 4 September 2019: "I think the time has come to basically turn over the page in the Fifth District."|
|Congressman Sean P. Duffy||Republican||House CD 7||Vacant Office. 26 August 2019: Resigning effective 23 September 2019 - "After eight and a half years, the time has come for me to focus more on the reason we fight these battles - family ... On September 23, I will step down...."|
Governor Anthony Steven "Tony" Evers (Democratic) will call a special election to fill the vacant seat.
23 September 2019: Formerly resigned.
|Senator Michael B. "Mike" Enzi||Republican||Senate Class 2||Open Seat. 4 May 2019: Announced retirement. Not running for re-election.|
|Office||Reason for Open Chair or Seat|
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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