| President Republican - District 40 | 100.% ( 448 of 448 ) precincts reporting as of Mar 4, 2008, at 9:49 a.m. County Returns Other Contests | | Districtwide Results | |
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| | Mike Huckabee (Rep) | 9,719 | 13.0 % |   |
| | Duncan Hunter (Rep) | 161 | 0.2 % |   |
| | Alan Keyes (Rep) | 278 | 0.3 % |   |
| | Sam Brownback (Rep) | 51 | 0.0 % |   |
| | John H. Cox (Rep) | 123 | 0.1 % |   |
| | Rudy Giuliani (Rep) | 3,156 | 4.3 % |   |
| | John McCain (Rep) | 29,291 | 39.1 % |   |
| | Ron Paul (Rep) | 3,211 | 4.3 % |   |
| | Mitt Romney (Rep) | 27,790 | 37.1 % |   |
| | Tom Tancredo (Rep) | 124 | 0.1 % |   |
| | Fred Thompson (Rep) | 1,168 | 1.5 % |   |
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