The members of Congress departing in 2020

James Sensenbrenner (left) and Lamar Alexander (right) speaking.
Jim Sensenbrenner (left) and Lamar Alexander. Photos: (Left) Chip Somodevilla/Getty Images; Tasos Katopodis/Getty images

More Republicans than Democrats are exiting Congress in the lead up to the 2020 elections. 18 GOP representatives and 4 senators are retiring without bids for higher office, compared to 4 Democratic representatives and 1 senator.

Why it matters: Congressional retirements provide a gauge of the political landscape before an election and may signal that some GOP candidates lack confidence that their party can retake control of the House, per The Atlantic.

Retiring House Republicans:

  • Will Hurd, Texas 23rd (Partisan Voter Index, via Cook Political Report: R+1)
  • Tom Marino, Penn. 12th (R+17)
  • Jim Sensenbrenner, Wisc. 5th (R+13)
  • Susan Brooks, Ind. 5th (R+9)
  • Martha Roby, Ala. 2nd (R+16)
  • Sean Duffy, Wis. 7th (R+8)
  • John Shimkus, Ill. 15th (R+21)
  • Bill Flores, Texas 17th (R+12)
  • Rob Woodall, Ga. 7th (R+9)
  • Paul Mitchell, Mich. 10th (R+13)
  • Pete Olson, Texas 22nd (R+10)
  • Kenny Marchant, Texas 24th (R+9)
  • Mike Conaway, Texas 11th (R+32)
  • Rob Bishop, Utah 1st (R+26)
  • Mac Thornberry, Texas 13th (R+33)
  • Chris Collins, N.Y. 27th (R+11)
  • Francis Rooney, Fla. 19th (R+13)
  • Greg Walden, Ore. 2nd (R+11)

Retiring House Democrats:

  • José Serrano, N.Y. 15th (D+44)
  • Dave Loebsack, Iowa 2nd (D+1)
  • Susan Davis, Calif. 53rd (D+14)
  • Pete Visclosky, Ind. 1st (D+8)

House Republicans quitting to run for higher office:

  • Bradley Byrne, Ala. 1st (R+15) (Running for Senate)
  • Greg Gianforte, Mont. at-large (R+11) (Running for Montana governor)
  • Paul Cook, Calif. 8th (R+9) (Running for San Bernardino County Board of Supervisors)
  • Roger Marshall, Kan. 1st (R+24) (Running for Senate)

House Democrats quitting to run for higher office:

  • Ben Ray Luján, N.M. 3rd (D+8) (Running for Senate)

Retiring Senate Republicans:

  • Lamar Alexander, Tenn. (2020 Senate Race Rating, via Cook Political Report: Likely R)
  • Mike Enzi, Wyo. (Solid R)
  • Johnny Isakson, Ga. (Likely R)
  • Pat Roberts, Kan. (Likely R)

Retiring Senate Democrats:

  • Tom Udall, N.M. (Likely D)

Go deeper: GOP Rep. Greg Walden to retire from Congress

Editor's note: This story has been corrected to reflect that the Partisan Voter Index for Texas' 23rd Congressional District is R+1.