https://thehill.com/homenews/house/46983...reelection
GOP retirements
1. Rep. Rob Woodall of Georgia announced on February 7, 2019, he will retire at the end of the term.
2. Rep. Susan Brooks of Indiana, the recruitment chair for the National Republican Congressional Committee for the 2020 election cycle, announced on June 14, 2019, that she will not run for reelection.
3. Rep. Paul Mitchell of Michigan announced on July 24, 2019, in a House floor speech that he will not seek reelection.
4. Rep. Pete Olson of Texas announced on July 25, 2019, in a statement that he will not run for reelection in 2020.
5. Rep. Martha Roby of Alabama announced on July 26, 2019, that she will not seek reelection for a sixth congressional term in 2020.
6. Rep. Rob Bishop of Utah, the ranking member of the House Natural Resources Committee, confirmed to The Deseret News on July 29, 2019, that he won't seek reelection in 2020.
7. Rep. Mike Conaway of Texas, the ranking member of the House Agriculture Committee, announced on July 31, 2019, he will not run for reelection.
8. Rep. Will Hurd of Texas announced on August 1, 2019, on Twitter that he will not seek reelection and will "pursue opportunities outside the halls of Congress to solve problems at the nexus between technology and national security."
9. Rep. Kenny Marchant of Texas announced on August 5, 2019, that he will not run for reelection, writing in a statement "I am looking forward to finishing out my term and then returning to Texas to start a new chapter."
10. Rep. John Shimkus of Illinois announced on August 30, 2019, that he will not seek reelection in 2020. He has been in Congress since 1997.
11. Rep. Bill Flores of Texas announced on September 4, 2019, that he will not seek reelection in 2020. He first won his seat in Congress in 2010.
12. Rep. Jim Sensenbrenner of Wisconsin, the second-most-senior member of the House, announced on September 4, 2019, that he will retire in January 2021. He has been in Congress since 1978.
13. Rep. Mac Thornberry of Texas announced on September 30 that he will not seek reelection in 2020, making him at least the sixth Texas Republican lawmaker to do so this election cycle.
14. Rep. Francis Rooney of Florida announced on October 19 he will not seek reelection, after suggesting he was open to supporting the impeachment of President Donald Trump.
15. Rep. Greg Walden of Oregon, the top-ranking Republican on the House Energy and Commerce Committee, announced on October 28 he will not seek reelection.
16. Rep. Peter King of New York, a former chairman of the House Homeland Security committee, announced on November 11, 2019, that he will not seek releection in 2020. He has served in Congress since 1993.