Required Election Audits, by Audit Rules

This page is sorted by audit rules. Another page is alphabetical.

Please email any corrections to admin@votewell.net

VerifiedVoting has full details on sample sizes and procedures.

Wikipedia has same information in a sortable table.

Check all ballots if needed?

Sample Size

West Virginia

All contests

Hand

Yes

3% of precincts

Alaska

All contests, but never smallest precincts

Hand

Yes

1 large precinct per House district, with at least 5% of district ballots

Arizona

Few contests

Hand

Yes

at least 2% or 2 precincts

District of Columbia

Few contests

Hand

Yes

5% of precincts and ballots

Hawaii

Few contests

Hand

Yes

10% of precincts

Massachusetts

Few contests

Hand

Yes

3% of precincts

Minnesota

Few contests

Hand

Yes

3% or at least 2-4 precincts

Missouri

Few contests

Hand

Yes

5% of precincts

New Mexico

Few contests

Hand

Yes

None in race with over 15% margin of victory, otherwise 4-165 precincts across state

North Carolina

Few contests

Hand

Yes

Risk-limiting

Ohio

Few contests

Hand

Yes

Machines or precincts totaling at least 5% of votes

Oregon

Few contests

Hand

Yes

3% to 10% depending on margin of victory

Rhode Island

Few contests

Hand

Yes

Risk-limiting

Washington

Few contests, only if requested

Hand

Yes

up to 3 precincts or 6 batches

Colorado

Few contests

Hand, and independent machines at Sec of State

Yes

Risk-limiting

New York

All contests

Machines different from voting system, or hand

Yes

3% of precincts

Connecticut

Few contests

Machines or hand

Yes

5% of voting districts

Vermont

All contests in 6 random towns

ClearBallot's independent machines in 6 towns

Yes

All ballots in 6 random towns

Maryland

All contests

ClearBallot analyzes scans from election machines

Yes

All ballot images created by election machines

Virginia

Few contests

Hand

Unclear

Risk-limiting

Kentucky

All contests, but many counties lack paper

Hand

Unclear

3% to 5% of precincts

Texas

Few contests, and many counties lack paper

Hand

Unclear

at least 1% or 3 precincts, not paperless machines

Indiana

All contests, if requested, but many counties lack paper

Machines different from voting system, or hand

Unclear

up to 5% or 5 precincts, but many counties lack paper

Nevada

All contests

Machines or hand

No rules

2% or 3% of machines

Pennsylvania

All contests, but many counties lack paper

Machines different from voting system, or hand

No rules

Lesser of 2% or 2,000 ballot images, but many counties lack paper

Utah

All contests

Hand

No

1% of machines

California

All contests, but not late-arriving ballots

Hand

No

1% of machines or precincts

Iowa

Few contests

Hand

No

Not defined

Montana

Few contests

Hand

No

at least 5% or 1 precinct

Wisconsin

Few contests

Hand

No

100 wards or other districts across state

Florida

All or few contests, depends on county*

ClearBallot's independent machines to check all contests or hand to check a few

No

2% of precincts

Illinois

All contests

Machines primarily

No

5% of precincts and machines

Nebraska

Few contests, only if requested

Method unclear

No

2% of precincts

Tennessee

Few contests, and most counties lack paper

Same method as election day

No

1 to 5 precincts

Alabama

No audit required

 

Arkansas

No audit required

 

Idaho

No audit required

Kansas

No audit required

Maine

No audit required

Michigan

No audit required

New Hampshire

No audit required

 

North Dakota

No audit required

South Dakota

No audit required

Wyoming

No audit required

Oklahoma

No audit required*

Mississippi

No audit required, and most counties lack paper

Delaware

None, no paper

Georgia

None, no paper

 

Louisiana

None, no paper

New Jersey

None, no paper

South Carolina

None, no paper

* Machines for voters with disabilities lack paper trail, though it would be useful for those who can see