Cathy Rodgers (R) : Victorious in the race for the WA-05 House seat.
Hal Rogers (R) : Victorious in the race for the KY-05 House seat.
Jaime Herrera-Beutler (R) : Defeated in the Primary.
John Boozman (R) : Victorious in the race for Senate in AR.
John Thune (R) : Victorious in the race for Senate in SD.
Kay Granger (R) : Victorious in the race for the TX-12 House seat.
Todd Young (R) : Victorious in the race for Senate in Indiana.
Why these people specifically? Beutler was an impeachment vote, that's one.
Yep. The majority holding chair positions is huge, even if the RINOs and bought men make securing a working majority on important votes impossible.