Date information provided by the National Association of Manufacturers (NAM). Requirements and availability for early voting by mail vary by State, so please visit the NAM Early Voting by Mail Rules page for more information or contact your local election office directly.
| State (click on name to go to the state's Election Website) | Mailed Application for an Absentee Ballot Due | Completed Absentee Ballot Due |
| Alabama | 10/30/2008 | 11/3/2008 |
| Alaska | 10/25/2008 | 11/4/2008 |
| Arizona | 10/24/2008 | 11/4/2008 |
| Arkansas | 10/28/2008 | 11/4/2008 |
| California | 10/28/2008 | 11/4/2008 |
| Colorado | 10/28/2008 | 11/4/2008 |
| Connecticut | 11/3/2008 | 11/4/2008 |
| Delaware | 10/31/2008 | 11/4/2008 |
| District of Columbia | N/A | N/A |
| Florida | 10/29/2008 | 11/4/2008 |
| Georgia | 10/28/2008 | 10/31/2008 |
| Hawaii | 10/28/2008 | 11/4/2008 |
| Idaho | 10/29/2008 | 11/4/2008 |
| Illinois | 10/30/2008 | 11/4/2008 |
| Indiana | 10/27/2008 | 11/4/2008 |
| Iowa | 10/28/2008 | 11/4/2008 |
| Kansas | 10/31/2008 | 11/4/2008 |
| Kentucky | 10/28/2008 | 11/4/2008 |
| Louisiana | 10/31/2008 | 11/3/2008 |
| Maine | N/A | 11/4/2008 |
| Maryland | 10/28/2008 | 11/4/2008 |
| Massachusetts | 11/3/2008 | 11/4/2008 |
| Michigan | 11/1/2008 | 11/4/2008 |
| Minnesota | N/A | 11/4/2008 |
| Mississippi | 11/3/2008 | 11/4/2008 |
| Missouri | 10/29/2008 | 11/4/2008 |
| Montana | 11/3/2008 | 11/4/2008 |
| Nebraska | 11/3/2008 | 11/4/2008 |
| Nevada | 10/28/2008 | 11/4/2008 |
| New Hampshire | N/A | 11/4/2008 |
| New Jersey | 10/28/2008 | 11/3/2008 |
| New Mexico | 10/30/2008 | 11/4/2008 |
| New York | 10/28/2008 | 11/4/2008 |
| North Carolina | 10/28/2008 | 11/3/2008 |
| North Dakota | N/A | 11/3/2008 |
| Ohio | 11/1/2008 | 11/4/2008 |
| Oklahoma | 10/29/2008 | 11/4/2008 |
| Oregon * | N/A | 11/4/2008 |
| Pennsylvania | 10/28/2008 | 10/31/2008 |
| Rhode Island | 10/14/2008 | 11/4/2008 |
| South Carolina | 10/31/2008 | 11/3/2008 |
| South Dakota | 11/3/2008 | 11/4/2008 |
| Tennessee | 10/28/2008 | 11/4/2008 |
| Texas | 10/28/2008 | 11/4/2008 |
| Utah | 10/31/2008 | 11/3/2008 |
| Vermont | N/A | 11/4/2008 |
| Virginia | 10/28/2008 | 11/4/2008 |
| Washington * | N/A | 11/4/2008 |
| West Virginia | 10/29/2008 | 11/4/2008 |
| Wisconsin | 10/30/2008 | 11/4/2008 |
| Wyoming | 11/3/2008 | 11/4/2008 |
* Vote by Mail state
