| President Republican - District 45 | 100.% ( 518 of 518 ) 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) | 9,019 | 12.5 % |   |
| | Duncan Hunter (Rep) | 282 | 0.3 % |   |
| | Alan Keyes (Rep) | 292 | 0.5 % |   |
| | Sam Brownback (Rep) | 33 | 0.0 % |   |
| | John H. Cox (Rep) | 61 | 0.0 % |   |
| | Rudy Giuliani (Rep) | 3,787 | 5.3 % |   |
| | John McCain (Rep) | 30,707 | 42.5 % |   |
| | Ron Paul (Rep) | 1,945 | 2.7 % |   |
| | Mitt Romney (Rep) | 24,666 | 34.1 % |   |
| | Tom Tancredo (Rep) | 110 | 0.1 % |   |
| | Fred Thompson (Rep) | 1,436 | 2.0 % |   |
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