(NEXSTAR) – The 2024 presidential election is fast approaching, and in some states, the voter registration deadline is as soon as this week.

Voters in key battlegrounds, including Florida, Arizona, and Georgia, have just days to register, and missing these deadlines could mean losing the opportunity to cast a ballot in what is shaping up to be a pivotal election.

In states like Alaska and Rhode Island, voter registration must be completed by Sunday, Oct. 6. Similarly, South Carolina has an Oct. 6 deadline for online registration, while the in-person registration deadline is earlier, on Oct. 4.

Looking further ahead, several states will see their voter registration deadlines fall on Monday, Oct. 7. These include important swing states such as Arizona, Florida, and Georgia, along with other states like Indiana, Kentucky, and Montana.

Some states, like Connecticut and California, allow in-person registration up to Election Day, but many others cut off all forms of registration weeks in advance. For example, in Alabama, Pennsylvania, and Colorado, voters must register by mid-to-late October.

Below is a full state-by-state breakdown of voter registration deadlines:

Voter registration deadlines by state

Alabama

Deadline to register by mail: Must be postmarked by Oct. 21

Deadline to register in person: Oct. 21

Deadline to register online: Oct. 21

Alaska

Deadline to register by mail: Must be postmarked by Oct. 6

Deadline to register in person: Oct. 6

Deadline to register online: Oct. 6

Arizona

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Oct. 7

Arkansas

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Not available

California

Deadline to register by mail: Must be postmarked by Oct. 21

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 21

Colorado

Deadline to register by mail: Must be postmarked by Oct. 28

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 28

Connecticut

Deadline to register by mail: Must be postmarked by Oct. 18

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 18

Delaware

Deadline to register by mail: Must be postmarked by Oct. 12

Deadline to register in person: Oct. 12

Deadline to register online: Oct. 12

District of Columbia

Deadline to register by mail: Must be received by Oct. 15

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 15

Florida

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Oct. 7

Georgia

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Oct. 7

Hawaii

Deadline to register by mail: Must be postmarked by Oct. 28

Deadline to register in person: Nov. 5

Deadline to register online: Nov. 5

Idaho

Deadline to register by mail: Must be postmarked Oct. 11

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 11

Illinois

Deadline to register by mail: Must be postmarked Oct. 8

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 21

Indiana

Deadline to register by mail: Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Oct. 7

Iowa

Deadline to register by mail: Oct. 21

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 21

Kansas

Deadline to register by mail: Must be postmarked by Oct. 15

Deadline to register in person: Oct. 15

Deadline to register online: Oct. 15

Kentucky

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Oct. 7

Louisiana

Deadline to register by mail: Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Oct. 15

Maine

Deadline to register by mail: Must be received by Oct. 15

Deadline to register in person: Oct. 15

Deadline to register online: Nov. 5

Maryland

Deadline to register by mail: Must be postmarked Oct. 15

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 15

Massachusetts

Deadline to register by mail: Must be postmarked Oct. 26

Deadline to register in person: Oct. 26

Deadline to register online: Oct. 26

Michigan

Deadline to register by mail: Must be postmarked Oct. 21

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 21

Minnesota

Deadline to register by mail: Oct. 15

Deadline to register in person: Oct. 15

Deadline to register online: Oct. 15

Mississippi

Deadline to register by mail: Must be received by Oct. 15

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 15

Missouri

Deadline to register by mail: Must be postmarked by Oct. 9

Deadline to register in person: Oct. 9

Deadline to register online: Oct. 9

Montana

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Nov. 5

Deadline to register online: Not available

Nebraska

Deadline to register by mail: Must be postmarked by Oct. 18

Deadline to register in person: Oct. 25

Deadline to register online: Oct. 18

Nevada

Deadline to register by mail: Must be postmarked by Oct. 8

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 23

New Hampshire

Deadline to register by mail: Must be received by Nov. 5

Deadline to register in person: Nov. 5

Deadline to register online: Not available

New Jersey

Deadline to register by mail: Must be postmarked by Oct. 15

Deadline to register in person: Oct. 15

Deadline to register online: Oct. 15

New Mexico

Deadline to register by mail: Must be postmarked by Oct. 8

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 8

New York

Deadline to register by mail: Must be postmarked Oct. 26

Deadline to register in person: Oct. 26

Deadline to register online: Oct. 26

North Carolina

Deadline to register by mail: Must be postmarked by Oct. 11

Deadline to register in person: Allowed during early voting period (Oct. 17 – Nov. 2)

Deadline to register online: Oct. 11

North Dakota

Voter registration is not required in North Dakota, but you will need a valid form of ID. Click here to learn more.

Ohio

Deadline to register by mail:  Must be postmarked by Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Oct. 7

Oklahoma

Deadline to register by mail: Must be postmarked by Oct. 11

Deadline to register in person: Oct. 11

Deadline to register online: Oct. 11

Oregon

Deadline to register by mail: Must be postmarked by Oct. 15

Deadline to register in person: Oct. 15

Deadline to register online: Oct. 15

Pennsylvania

Deadline to register by mail: Must be received by Oct. 21

Deadline to register in person: Oct. 21

Deadline to register online: Oct. 21

Rhode Island

Deadline to register by mail: Must be postmarked by Oct. 6

Deadline to register in person: Oct. 6

Deadline to register online: Oct. 6

South Carolina

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Oct. 4

Deadline to register online: Oct. 6

South Dakota

Deadline to register by mail: Must be received by Oct. 21

Deadline to register in person: Oct. 21

Deadline to register online: Not available

Tennessee

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Oct. 7

Texas

Deadline to register by mail: Must be postmarked by Oct. 7

Deadline to register in person: Oct. 7

Deadline to register online: Not available

Utah

Deadline to register by mail: Must be received by Oct. 25

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 25

Vermont

Deadline to register by mail: Must be received by Nov. 5

Deadline to register in person: Nov. 5

Deadline to register online: Nov. 5

Virginia

Deadline to register by mail: Must be postmarked by Oct. 15

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 15

Washington

Deadline to register by mail: Must be received by Oct. 28

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 28

West Virginia

Deadline to register by mail: Must be postmarked by Oct. 15

Deadline to register in person: Oct. 15

Deadline to register online: Oct. 15

Wisconsin

Deadline to register by mail: Must be postmarked by Oct. 16

Deadline to register in person: Nov. 5

Deadline to register online: Oct. 16

Wyoming

Deadline to register by mail: Must be received by Oct. 21

Deadline to register in person: Nov. 5

Deadline to register online: Not available