Another office - appointed
Mick Mulvaney (R) (South Carolina, District 05)
Mike Pompeo (R) (Kansas, District 04)
Tom Price (R) (Georgia, District 06)
Jeff Sessions (R) (Alabama, Senate)
Ryan K Zinke (R) (Montana, District 01)
Left office
Luther Strange (R) (Alabama, Senate)
Resigned
Xavier Becerra (D) (California, District 34)
Jason Chaffetz (R) (Utah, District 03)
Thad Cochran (R) (Mississippi, Senate)
John Conyers Jr. (D) (Michigan, District 13)
Al Franken (D) (Minnesota, Senate)
Trent Franks (R) (Arizona, District 08)
Tim Murphy (R) (Pennsylvania, District 18)
Pat Tiberi (R) (Ohio, District 12)
Retiring - Self Term Limited
James Bridenstine (R) (Oklahoma, District 01)
Retiring at end of session
Joe Barton (R) (Texas, District 06)
Robert A. Brady (D) (Pennsylvania, District 01)
Bob Corker (R) (Tennessee, Senate)
John K Delaney (D) (Maryland, District 06)
Charlie Dent (R) (Pennsylvania, District 15)
John J Duncan Jr. (R) (Tennessee, District 02)
Blake Farenthold (R) (Texas, District 27)
Jeff Flake (R) (Arizona, Senate)
Rodney Frelinghuysen (R) (New Jersey, District 11)
Bob Goodlatte (R) (Virginia, District 06)
Trey Gowdy (R) (South Carolina, District 04)
Gene Green (D) (Texas, District 29)
Luis V Gutierrez (D) (Illinois, District 04)
Gregg Harper (R) (Mississippi, District 03)
Orrin G Hatch (R) (Utah, Senate)
Jeb Hensarling (R) (Texas, District 05)
Darrell Issa (R) (California, District 49)
Lynn Jenkins (R) (Kansas, District 02)
Sam Johnson (R) (Texas, District 03)
Ruben Kihuen (D) (Nevada, District 04)
Sander Levin (D) (Michigan, District 09)
Frank LoBiondo (R) (New Jersey, District 02)
Patrick Meehan (R) (Pennsylvania, District 07)
Rick Nolan (D) (Minnesota, District 08)
Ted Poe (R) (Texas, District 02)
Dave Reichert (R) (Washington, District 08)
Tom Rooney (R) (Florida, District 17)
Ileana Ros-Lehtinen (R) (Florida, District 27)
Ed Royce (R) (California, District 39)
Carol Shea-Porter (D) (New Hampshire, District 01)
Bill Shuster (R) (Pennsylvania, District 09)
Lamar Smith (R) (Texas, District 21)
Dave Trott (R) (Michigan, District 11)
Niki Tsongas (D) (Massachusetts, District 03)
Got first list, from
https:// www.opensecrets.org/members-of-congress/outgoing-members-list?cycle=2018
As of March 26, 2018, 52 representatives will not seek re-election to their U.S. House districts.
Party breakdown:
Democratic Party 16 Democratic members of the U.S. House
and
Republican Party 36 Republican members of the U.S. House
https:// ballotpedia.org/List_of_U.S._Congress_incumbents_who_are_not_running_for_re-election_in_2018
THE LIST IS GETTING LONGER, especially with Paul Ryan being added to the list today.