I have yet to validate all of these links (as I am building it from an older inactive list I found), so please feel free to add links in the reply section to this page if you know of a voting activist group in your state, or nationally, that should be added to this page.
Alaska
Count Every Vote Alaska
Arizona
Arizona Citizens for Election Reform
Arizona Citizens for Fair Elections
Arizona Volunteers Organized for Tomorrow’sElections
AUDITAZ
Arkansas
Email Arkansas Votes
California
California Election ProtectionNetwork California Voter Foundation
Californians for Electoral Reform
Contest the Vote S.A.V.E. Democracy
Colorado
Citizens for Verifiable Voting
Citizens for Accurate Mail Ballot ElectionResults
Fair Vote Colorado
Coloradoans for Voting Integrity
Connecticut
CTVotersCount.org
True Vote Connecticut
Citizens for Election Reform (CFER)
Yale Students for Clean Elections
Florida
Email Broward Verified Voting
Election Reform Coalition
Pinellas Reform Coalition
Florida Fair Elections Coalition
Miami-Dade Election Reform Coalition
Email Palm Beach Coalition for Election Reform
Sarasota Alliance for Fair Elections
Safe Vote
Email Voting Integrity Alliance of Tampa Bay
Georgia
Count the Vote
Voter Choice Coalition
Defenders of Democracy
Georgians for Verified Voting
Hawaii
Safe Vote Hawaii
Illinois
Illinois Ballot Integrity Project
Iowa
Iowans for Voting Integrity
Iowa Voters for Open and Transparent Elections
Louisiana
Louisiana Counts
Maine
Maine Citizens for Clean Elections
Maryland
True Vote MD
Massachusetts
MassVote
Michigan
Ann Arbor Area Committee for Peace
Minnesota
Citizens for Election Integrity
Fair Vote Minnesota
Missouri
Missourians for Honest Elections
Email Essex County Task Force
New Jersey
Coalition for Peace Action
New Mexico
United Voters of New Mexico
New York
New Yorkers for Verified Voting
Where’s the Paper
North Carolina
N.C. Coalition for Verified Voting
Ohio
Citizen’s Alliance for Secure Elections
Greater Cleveland Voter Registration Coalition
J30 Election Coalition
Ohio Honest Elections Campaign
Ohio Vote Suppression News
Oregon
Action Speaks
Oregon Clean Vote
Oregon Voter Rights Coalition
Oregon Voting
Pennsylvania
Coalition for Voting Integrity Election Reform Network (Montgomery County)
Email Mercer County Citizens for Better Government
PA Verified Voting
Vote PA
Tennessee
Email: Gathering to Save Our Democracy
Texas
Texas Safe Voting
VoteRescue
Utah
Utah: Count Votes!
Vermont
Virginia
New Electoral Reform Alliance for Virginia
Virginia Verified Voting
Washington
Citizens for Voting Integrity – WashingtonWashington Citizens for Fair Elections
West Virginia
West Virginia Citizen ActionGroup
Citizens for Clean Elections
Wisconsin
Washburn’s World
Fair Elections Wisconsin
Please note inclusion on this list does not indicate an endorsement by The No Vote By Mail Project of the Organization or its voting reform platform. For example, NOVBM is opposed to verified voting of privately controlled computer vote counting systems, which most “verified voting” organizations support. Those organizations are, however, included here anyway.
The No Vote By Mail Project 
[…] Voting Activist Groups […]
Please add CitizensOversight, in CA but nationally focused.