| Republican Primaries | ||||||
| Date | State | Delegates | Winner | |||
| 01/03/2012 | Iowa | Caucus | 28 | Rick Santorum | ||
| 01/10/2012 | New Hampshire | Primary | 12 | Mitt Romney | ||
| 01/21/2012 | South Carolina | Primary | 25 | Newt Gingrich | ||
| 01/31/2012 | Florida | Primary | 50 | Winner- Take-All | Mitt Romney | |
| 02/04/2012 | Nevada | Caucus | 28 | Mitt Romney | ||
| 02/07/2012 | Colorado | Caucus | 36 | Rick Santorum | ||
| Minnesota | Caucus | 40 | Rick Santorum | |||
| Missouri | Rick Santorum | |||||
| 02/11/2012 | Maine | Caucus | 24 | |||
| 02/28/2012 | Arizona | Primary | 29 | Winner-Take-All | ||
| Michigan | Primary | 30 | Winner-Take-All | |||
| 03/03/2012 | Washington | Caucus | 43 | |||
| 03/06/2012 | Alaska | Caucus | 27 | |||
| Georgia | Primary | 76 | ||||
| Idaho | Caucus | 32 | ||||
| Massachusetts | Primary | 41 | ||||
| North Dakota | Caucus | 28 | ||||
| Ohio | Primary | 66 | ||||
| Oklahoma | Primary | 43 | ||||
| Tennessee | Primary | 58 | ||||
| Vermont | Primary | 17 | ||||
| Virginia | Primary | 49 | ||||
| 03/10/2012 | Guam | Caucus | 9 | |||
| Kansas | Caucus | 40 | ||||
| Wyoming | Caucus | 29 | ||||
| Virgin Islands | Caucus | 6 | ||||
| 03/13/2012 | Alabama | Primary | 50 | |||
| American Samoa | Caucus | 9 | ||||
| Hawaii | Caucus | 20 | ||||
| Mississippi | Primary | 40 | ||||
| 03/17/2012 | Missouri | Caucus | 52 | |||
| 03/18/2012 | Puerto Rico | Caucus | 23 | Winner-Take-All | ||
| 03/20/2012 | Illinois | Primary | 69 | |||
| 03/24/2012 | Louisiana | Primary | 46 | |||
| 04/03/2012 | Maryland | Primary | 37 | Winner-Take-All | ||
| Texas | Primary | 155 | ||||
| Washington D.C. | Primary | 19 | Winner-Take-All | |||
| Wisconsin | Primary | 42 | Winner-Take-All | |||
| 04/24/2012 | Connecticut | Primary | 28 | |||
| Delaware | Primary | 17 | ||||
| New York | Primary | 95 | ||||
| Pennsylvania | Primary | 72 | ||||
| Rhode Island | Primary | 19 | ||||
| 05/08/2012 | Indiana | Primary | 46 | |||
| North Carolina | Primary | 55 | ||||
| West Virginia | Primary | 31 | ||||
| 05/15/2012 | Nebraska | Primary | 35 | |||
| Oregon | Primary | 28 | ||||
| 05/22/2012 | Arkansas | Primary | 36 | |||
| Kentucky | Primary | 45 | Winner-Take-All | |||
| 06/05/2012 | California | Primary | 172 | |||
| Montana | Primary | 26 | Winner-Take-All | |||
| New Jersey | Primary | 50 | ||||
| New Mexico | Primary | 23 | ||||
| South Dakota | Primary | 28 | Winner-Take-All | |||
| 06/26/2012 | Utah | Primary | 40 | |||
| Aug 27-30 | Republican National Convention |