| President Republican - District 20 | 100.% ( 438 of 438 ) 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) | 3,768 | 15.6 % |   |
| | Duncan Hunter (Rep) | 89 | 0.3 % |   |
| | Alan Keyes (Rep) | 136 | 0.5 % |   |
| | Sam Brownback (Rep) | 30 | 0.1 % |   |
| | John H. Cox (Rep) | 39 | 0.1 % |   |
| | Rudy Giuliani (Rep) | 1,290 | 5.4 % |   |
| | John McCain (Rep) | 9,838 | 40.6 % |   |
| | Ron Paul (Rep) | 686 | 2.9 % |   |
| | Mitt Romney (Rep) | 7,668 | 31.7 % |   |
| | Tom Tancredo (Rep) | 22 | 0.0 % |   |
| | Fred Thompson (Rep) | 666 | 2.8 % |   |
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