Rep. Mac Thornberry. Photo: Michael Brochstein/SOPA Images/LightRocket/Getty Images
Why it matters: Republicans hope to reclaim the House in 2020, but early retirements could complicate that task. Thornberry's retirement means that more than a quarter of Texas' 23 House Republicans will leave at the end of this term, further complicating the party's status in a state that is becoming increasingly competitive for Democrats.
House GOP Texas seats now up for grabs in 2020:
- Rep. Mike Conaway, 11th district
- Rep. Mac Thornberry, 13th district
- Rep. Bill Flores, 17th district
- Rep. Pete Olson, 22nd district
- Rep. Will Hurd, 23rd district
- Rep. Kenny Marchant, 24th district
What they're saying: "With over a year to go, I will continue to represent the people of the 13th District to the best of my ability. Our nation faces many difficult challenges, and none of us can relax our efforts to meet and overcome them, whether at home or around the world," Thornberry, the ranking member of the House Armed Services Committee, said in a statement.
Of note: Thornberry overwhelmingly won re-election in 2018, earning more than 80% of his district's votes.