| Henry Cuellar | D |
| Williams "Will" Hayward | R |
| Michael D. Cary | G |
| Patrick Hisel | L |
| Henry Cuellar | 67.94% |
| Williams "Will" Hayward | 29.71% |
| Patrick Hisel | 1.48% |
| Michael D. Cary | 0.84% |
| Michael D. Cary | 100.00% |
| Henry Cuellar | 100.00% |
| Williams "Will" Hayward | 100.00% |
| Patrick Hisel | 100.00% |
| Henry Cuellar | 56.34% |
| Bryan Underwood | 41.95% |
| Stephen Kaat | 1.69% |
| Bryan Underwood | 73.94% |
| Daniel "Dan" Chavez | 26.06% |
| Henry Cuellar | 68.71% |
| Jim Fish | 29.22% |
| Ross Lynn Leone | 2.07% |
| Henry Cuellar | 100.00% |
| Jim Fish | 100.00% |
| Henry Cuellar | 67.61% |
| Frank Enriquez | 20.32% |
| Ron Avery | 12.07% |
| Henry Cuellar | 26.55% |
| Ciro Rodriguez | 20.23% |
| Victor Morales | 3.22% |
| Henry Cuellar | 59.01% |
| James "Jim" Hopson | 38.60% |
| Ken Ashby | 2.39% |
| James "Jim" Hopson | 64.37% |
| Francisco "Quico" Canseco | 35.63% |
| James "Jim" Hopson | 49.08% |
| Francisco "Quico" Canseco | 21.38% |
| Chris Bellamy | 14.94% |
| Gabriel Perales Jr. | 14.60% |
| Henry Cuellar | 25.10% |
| Ciro Rodriguez | 24.90% |
| Ciro D. Rodriguez | 71.09% |
| Gabriel Perales Jr. | 26.86% |
| William A. "Bill" Stallknecht | 2.05% |
| Ciro D. Rodriguez | 100.00% |
| Gabriel Perales Jr. | 100.00% |
| Ciro Rodriguez | 89.04% |
| William A. "Bill" Stallknecht | 10.96% |
| Ciro Rodriguez | 100.00% |
| Ciro Rodriguez | 90.54% |
| Edward Elmer | 9.46% |
| Ciro Rodriguez | 75.87% |
| Lauro A. Bustamante | 12.81% |
| Oscar H. Flores | 11.32% |
| Ciro Rodriguez | 66.68% |
| Juan F. Solis III | 33.32% |
| Ciro Rodriguez | 23.06% |
| Juan F. Solis III | 13.25% |
| Mark Cude | 4.03% |
| Carlos "Charlie" Uresti | 2.21% |
| John P. Kelly | 2.02% |
| Lauro A. Bustamante | 1.35% |
| John A. "Drew" Traeger | 1.18% |
| Narciso V. Mendoza | 1.02% |
| Phil Ross | 0.62% |
| Mike G. Pacheco | 0.38% |
| Oliver Lowell Blair | 0.28% |
| Patrick A. Mason | 0.26% |
| Robert Cantu | 0.13% |
| Michael Idrogo | 0.11% |
| Jose Julian De La Rocha | 0.09% |
| Steven Finch | 0.00% |
| Joyce Wageck | 0.00% |
| Jerome Gonzales | 0.00% |
| Frances Gasch | 0.00% |
| Lauro Bustamante | 0.00% |
| Frank Tejeda | 75.37% |
| Mark L. Cude | 23.40% |
| Clifford Finley | 1.23% |
| Mark L. Cude | 100.00% |
| Frank Tejeda | 100.00% |
| Frank Tejeda | 70.88% |
| David C. Slatter | 27.57% |
| Stephan "Steve" Rothstein | 1.54% |
| David C. Slatter | 100.00% |
| Frank Tejeda | 100.00% |
| Frank Tejeda | 87.11% |
| David C. Slatter | 12.89% |
| Frank Tejeda | 100.00% |
