Seniority and President Pro Tempore List
| Member | Oath of Office Administered | President Pro Tempore Election |
|---|---|---|
| 01. Zaffirini | 70th Regular (02/1987) | 75th Regular (1997) |
| 02. West | 73rd Regular (01/1993) | 79th Regular (2006) |
| 03. Hinojosa, Juan | 78th Regular (01/2003) | 84th Regular (2015) |
| 04. Nichols | 80th Regular (01/2007) | 85th Interim (2017) |
| 05. Huffman | 80th Interim (12/2008) | 86th Interim (2019) |
| 06. Birdwell | 81st Interim (07/2010) | 87th Regular (2021) |
| 07. Campbell | 83rd Regular (01/2013) | 87th Interim (2021) |
| 08. Schwertner | 83rd Regular (01/2013) | 88th Interim (2023) |
| 09. Perry | 83rd Interim (09/2014) | 89th Interim (2025) |
| 10. Kolkhorst | 83rd Interim (12/2014) | |
| 11. Hall | 84th Regular (01/2015) | |
| 12. Bettencourt | 84th Regular (01/2015) | |
| 13. Menéndez | 84th Regular (03/2015) | |
| 14. Miles | 85th Regular (01/2017) | |
| 15. Hughes | 85th Regular (01/2017) | |
| 16. Alvarado | 85th Interim (12/2018) | |
| 17. Johnson | 86th Regular (01/2019) | |
| 18. Paxton | 86th Regular (01/2019) | |
| 19. Eckhardt | 86th Interim (07/2020) | |
| 20. Flores | 85th Interim (10/2018); 88th Regular (01/2023) | |
| 21. Gutierrez | 87th Regular (01/2021) | |
| 22. Blanco | 87th Regular (01/2021) | |
| 23. Middleton | 88th Regular (01/2023) | |
| 24. King | 88th Regular (01/2023) | |
| 25. Sparks | 88th Regular (01/2023) | |
| 26. Parker | 88th Regular (01/2023) | |
| 27. Cook | 88th Interim (05/2024) | |
| 28. Hinojosa, Adam | 89th Regular (01/2025) | |
| 29. Hagenbuch | 89th Regular (01/2025) | |
| 30. Rehmet | 89th Interim (02/2026) |