Hintergrund
Die Reihenfolge der US-Vorwahlen Wer wählt wo wann?
| Termin | Bundesstaat (Art der Vorwahl) | |
|---|---|---|
| 03. Januar 2012 | Iowa (caucus) | |
| 10. Januar 2012 | New Hampshire (primary) | |
| 21. Januar 2012 | South Carolina (primary) | |
| 31. Januar 2012 | Florida (primary) | |
| 04. Februar 2012 | Nevada (caucus) | |
| 07. Februar 2012 | Colorado (caucus), Minnesota (caucus), Missouri (primary, nur bindend für Demokraten) | |
| 04.-11. Februar 2012 | Maine (caucus) | |
| 28. Februar 2012 | Arizona (primary), Michigan (primary) | |
| 03. März 2012 | Washington (caucus) | |
| 06. März 2012 (Super-Dienstag) | Alaska (caucus), Georgia (primary), Idaho (caucus), Massachusetts (primary), North Dakota (caucus), Ohio (primary), Oklahoma (primary), Tennessee (primary), Vermont (primary), Virginia (primary) | |
| 06.-10. März 2012 | Wyoming (caucus) | |
| 10. März 2012 | Kansas (caucus), U.S. Virgin Islands (caucus) | |
| 13. März 2012 | Alabama (primary), Hawaii (caucus), Mississippi (primary) | |
| 17. März 2012 | Missouri (caucus für Republikaner) | |
| 20. März 2012 | Illinois (primary) | |
| 24. März 2012 | Louisiana (primary) | |
| 03. April 2012 | District of Columbia (primary), Maryland (primary), Wisconsin (primary), Texas (primary) | |
| 24. April 2012 | Connecticut (primary), Delaware (primary), New York (primary), Pennsylvania (primary), Rhode Island (primary) | |
| 08. Mai 2012 | Indiana (primary), North Carolina (primary), West Virginia (primary) | |
| 15. Mai 2012 | Nebraska (primary), Oregon (primary) | |
| 22. Mai 2012 | Arkansas (primary), Kentucky (primary) | |
| 05. Juni 2012 | California (primary), Montana (primary), New Jersey (primary), New Mexico (primary), South Dakota (primary) | |
| 26. Juni 2012 | Utah (primary) | |