General Discussion

I found 11 listed so far and confirmed that these are all republican:

*Juan Ciscomani (AZ-06)
*Mike Flood (NE-01)
*Andrew Garbarino (NY-02)
*Mike Lawler (NY-17)
*Derrick Van Orden (WI-03),
**Greg Murphy (NC-03)
*Bill Huizenga (MI-04).
https://climatepower.us/news/yikes-gas-prices-hit-4-while-gop-tours-a-scottish-castle/
https://www.semafor.com/article/04/01/2026/lawmakers-get-tmz-treatment-during-dhs-shutdown

**Claudia Tenney (NY-24)
Jason Smith (MO-8)
*John McGuire (VA-5)
*David Rouzer (NC-7)
https://www.tmz.com/2026/04/01/taxpayers-sponsor-congress-scotland-vacation/?adid=social-tw

It’s stated that these were from the Main Street Caucus.. i don’t see Jason Smith on a list yet but everyone else listed above is on one of two Main Street caucus lists. Most in Wikipedia and also on the Main Street website (or on Main Street alone, which I marked with 2 asterisks): https://www.republicanmainstreet.org/members

Wikipedia has this list of affiliated members of the Main Street Partnership:
representatives
*Juan Ciscomani (AZ-06)
David Valadao (CA-22)
Jay Obernolte (CA-23)
Young Kim (CA-40)
Ken Calvert (CA-41)
Jeff Hurd (CO-03)
Jeff Crank (CO-05)
Aaron Bean (FL-04)
John Rutherford (FL–05)
Mike Haridopolos (FL-08)
Laurel Lee (FL-15)
Mario Díaz-Balart (FL–26)
Carlos Giménez (FL-28)
Buddy Carter (GA-01) (Retiring at the end of the 119th Congress).
Mike Simpson (ID–02)
Mike Bost (IL–12)
Jim Baird (IN-04)
Jefferson Shreve (IN-06)
Mark Messmer (IN-08)
Erin Houchin (IN-09)
Mariannette Miller-Meeks (IA-01)
Randy Feenstra (IA-04) (Retiring at the end of the 119th Congress).
Derek Schmidt (KS-02)
Andy Barr (KY-06) (Retiring at the end of the 119th Congress).
Julia Letlow (LA-05) (Retiring at the end of the 119th Congress).
John Moolenaar (MI–02)
*Bill Huizenga (MI–04)
Lisa McClain (MI-09)
Brad Finstad (MN-01)
Tom Emmer (MN-06)
Pete Stauber (MN-08)
Michael Guest (MS-03)
Troy Downing (MT-02)
*Mike Flood (NE-01)
Don Bacon (NE–02) (Retiring at the end of the 119th Congress).
Tom Kean Jr. (NJ-07)
Nick LaLota (NY-01)
*Andrew Garbarino (NY-02)
Nicole Malliotakis (NY-11)
*Mike Lawler (NY-17)
Nick Langworthy (NY-23)
*David Rouzer (NC-07)
Chuck Edwards (NC-11)
Julie Fedorchak (ND-AL)
Michael Rulli (OH-06)
Max Miller (OH-07)
Mike Turner (OH–10)
Troy Balderson (OH–12)
David Joyce (OH–14)
Stephanie Bice (OK-05)
Cliff Bentz (OR-02)
Brian Fitzpatrick (PA–01)
Ryan Mackenzie (PA-07)
Rob Bresnahan (PA-08)
Dan Meuser (PA-09)
Guy Reschenthaler (PA-14)
Dusty Johnson (SD-AL) (Retiring at the end of the 119th Congress).
Nathaniel Moran (TX-01)
Dan Crenshaw (TX-02)
Jake Ellzey (TX-06)
Mónica de la Cruz (TX-15)
Peter Sessions (TX-17)
Blake Moore (UT-01)
Celeste Maloy (UT-02)
Mike Kennedy (UT-03)
Jen Kiggans (VA-02)
*John McGuire (VA-05)
Dan Newhouse (WA-04) (Retiring at the end of the 119th Congress).
Michael Baumgartner (WA-05)
Carol Miller (WV-01)
Bryan Steil (WI-01)
*Derrick Van Orden (WI-03)
Tony Wied (WI-08)

These senators are also part of the affiliated list:
Todd Young (IN)
Roger Marshall (KS)
Susan Collins (ME)
Tim Sheehy (MT)
John Curtis (UT)
Jim Justice (WV)
Shelley Moore Capito (WV)