2014 Special Election, Senate District 28
| Charles Perry | 53.39% |
| Jodey Arrington | 30.27% |
| Greg Wortham | 13.09% |
| Delwin Jones | 1.57% |
| Kerry McKennon | 0.83% |
| E.M. Garza | 0.81% |
2012 General Election
| Robert Duncan | 86.40% |
| M.J. "Smitty" Smith | 13.59% |
2012 Republican Party Primary Election
| Robert Duncan | 85.37% |
| E.M. Garza | 14.62% |
2012 Libertarian Party Primary Election
| M.J. "Smitty" Smith | 100.00% |
2008 General Election
| Robert Duncan | 88.17% |
| M. J. "Smitty" Smith | 11.83% |
2008 Republican Party Primary Election
| Robert Duncan | 100.00% |
2004 General Election
| Robert Duncan | 100.00% |
2004 Republican Primary Election
| Robert Duncan | 100.00% |
2002 General Election
| Robert Duncan | 91.32% |
| Jon Ensor | 8.68% |
2002 Republican Primary Election
| Robert Duncan | 100.00% |
1998 General Election
| Robert Duncan | 100.00% |
1998 Republican Primary
| Robert Duncan | 100.00% |
1996 Special Runoff Election
| Robert Duncan | 56.82% |
| David R. Langston | 43.18% |
1996 November Special Election
| Robert Duncan | 30.41% |
| David R. Langston | 24.29% |
| Tim Lambert | 12.73% |
| Gary L. Watkins | 12.57% |
| Monte Hasie | 8.97% |
| Lorenzo "Bubba" Sedeno | 8.37% |
| Dick Bowen | 2.65% |
1994 General Election
| John T. Montford | 64.21% |
| Val Varley | 35.79% |
1994 Democratic Primary Election
| John T. Montford | 100.00% |
1994 Republican Primary Election
| Val Varley | 100.00% |
1992 General Election
| John T. Montford | 64.36% |
| Geo. Gray | 33.00% |
| E. A. Addington | 2.64% |
1992 Democratic Primary Election
| John T. Montford | 100.00% |
1992 Republican Primary Election
| Geo. Gray | 100.00% |
