| President Republican - District 42 | 100.% ( 433 of 433 ) precincts reporting as of Mar 4, 2008, at 9:49 a.m. County Returns Other Contests | | Districtwide Results | |
| |
| | Mike Huckabee (Rep) | 11,940 | 13.1 % |   |
| | Duncan Hunter (Rep) | 167 | 0.1 % |   |
| | Alan Keyes (Rep) | 247 | 0.2 % |   |
| | Sam Brownback (Rep) | 53 | 0.0 % |   |
| | John H. Cox (Rep) | 100 | 0.1 % |   |
| | Rudy Giuliani (Rep) | 3,785 | 4.2 % |   |
| | John McCain (Rep) | 34,869 | 38.3 % |   |
| | Ron Paul (Rep) | 3,511 | 3.9 % |   |
| | Mitt Romney (Rep) | 35,286 | 38.7 % |   |
| | Tom Tancredo (Rep) | 139 | 0.1 % |   |
| | Fred Thompson (Rep) | 1,139 | 1.3 % |   |
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