Security and ballot drop boxes: How it works in WA

Serial numbers, seals, logs and GPS tracking are some of the tools used to protect the ballots placed in drop boxes each election cycle.

Election workers sort ballots

Ballots are processed at the King County Elections headquarters in Renton for Washington state’s presidential primary election on March 10, 2020. Elections workers were required to wear gloves at the time to prevent COVID-19. (Dorothy Edwards/Crosscut)

Washington’s sturdy, tank-like ballot drop boxes are a source of pride for state and local election officials. So when President Donald Trump suggested Monday that those ballot boxes were less than secure, the response was sharp.

“Some states use ‘drop boxes’ for the collection of Universal Mail-In Ballots,” Trump tweeted Monday. “So who is going to ‘collect’ the Ballots, and what might be done to them prior to tabulation? A Rigged Election? So bad for our Country. Only Absentee Ballots acceptable!”

It turns out, Washington state has laws in place to prevent that. And the state, which has been all-vote-by-mail since 2011, has a decade of experience with ballot boxes that counters the president’s claims. 

Washington’s top elections official, Republican Secretary of State Kim Wyman, said Monday she knows of no incidents where ballot drop boxes have been tampered with or the ballots inside altered. 

“Washington’s experience is that they are very secure,” Wyman said. “We haven’t had any issues with lost ballots or fraud — and our voters love them. I don’t share the president’s concerns about ballot drop box fraud.”

Nationwide, the focus on ballot drop boxes has increased amid fears that cost-cutting measures at the U.S. Postal Service could hamper mail-in voting. On Tuesday, Washington State Attorney General Bob Ferguson announced a lawsuit challenging recent postal service operational changes that he said could undermine the November election. Also Tuesday, U.S. Postmaster General Louis DeJoy said he would pause some mail-system changes until after the election. 

Vote 2020 logo

The issue has taken on greater importance this year, as more states shift to voting by mail during the COVID-19 pandemic.

In Washington state, more than half of voters in the Aug. 4 primary election used drop boxes to return their ballots, according to Wyman’s office. There are about 450 boxes statewide.  

State law requires two people to be present any time ballot boxes are emptied, to ensure there are witnesses to the process. Those people must log the date and time they remove ballots, along with their names, so there is a record of who handled the ballots should anything turn up amiss.

The workers transporting the ballots aren’t volunteers, either. Five county election officials who spoke with Crosscut Tuesday said they use only trained county election employees to transport ballots. Those people have to sign an oath that they will uphold the integrity of the election process.

“The people who are doing this are sworn election workers — they take an oath before every election to perform their duties and comply with the law,” said Mason County Auditor Paddy McGuire. “These aren’t just people we pick up off the street. Most of the people who have been doing this have been doing this for years and years in our office. They are people we trust.”

Ballots in Washington's all vote-by-mail system pass through multiple levels of security and verification to maintain integrity of results. (Jen Dev/Crosscut)

Every time a ballot drop box is unlocked and emptied, a tamper-evident seal is placed on the access door. That means that when election workers return to the ballot box, they will be able to see if someone opened it and accessed the ballots without permission. 

All seals are numbered and the seals’ serial numbers are logged by election workers. 

Ballots are then moved from the drop box to the counting facility in another secure container, which also is closed using a numeric seal. 

Once the secure container of ballots reaches the tabulation center, the number on the seal is checked against the paperwork that was filled out when the box was emptied. State law requires that a second copy of the paperwork be kept inside the container, for added verification.

Some counties have gone to additional lengths to ensure they can track the process of emptying ballot boxes.

Pierce County, the state’s second most populous, issues county-owned phones to election workers and tracks them via a GPS system as they travel between ballot boxes. 

That way, the county knows if an election worker takes a detour or goes anywhere else with the ballots.

“They are given very clear driving directions, and they cannot deviate” from that route, said Julie Anderson, Pierce County auditor since 2009. She said that means even if someone made an unauthorized stop at 7-11 to use the restroom, county officials would know.

The same electronic system in Pierce County lets election workers upload information about dropoffs and pickups in real time, so that the auditor’s office can monitor the status of drop boxes remotely, Anderson said.

During ballot pickups, Pierce County election workers take photos of the empty ballot boxes and upload them as proof that all ballots were removed and none were left behind. King County election workers follow a similar procedure.

A large ballot drop box in a parking lot

This ballot drop box in Pierce County is an example of one of the quarter-inch thick steel ballot drop boxes that local elections officials commissioned and designed with security in mind. (Melissa Santos/Crosscut)

This ballot drop box in Pierce County is an example of one of the quarter-inch thick steel ballot drop boxes that local elections officials commissioned and designed with security in mind. (Melissa Santos/Crosscut)

Julie Wise, King County’s elections director, said the state’s systems for tracking ballots also ensure that fraudulent ballots can’t be fabricated and stuffed in drop boxes to sway an election.

Each ballot envelope has a unique identifier associated with each voter, which ensures that elections officials only count one ballot per person — even if someone were to put multiple ballots in a drop box, or try to flood a drop box with fake ballots, she said.

That’s even the case with the online ballots that King County voters can fill out and print at home, she said. 

“You can’t have foreign interference, people printing off envelopes and sending them in,” Wise said. “That’s not how it works.”

Meddling with ballots to achieve a political end would also be difficult, since it’s impossible to tell how a person voted from the outside of a ballot envelope, said Thurston County Auditor Mary Hall.

Yakima County Auditor Charles Ross said people are invited to come learn election procedures and observe the process of opening ballot boxes to ensure everything is done properly.

“Any person can witness, go with us, meet us at a location,” Ross said. “We crave observation, we love when people come observe it.”

Anderson said trained observers from the political parties are often present when drop boxes are emptied in Pierce County, “to make sure nothing is happening.”

Ballot boxes vary in size and weight, but many are several hundred pounds, or even 1,000 pounds. They are also typically bolted into the ground, so they can’t just be picked up and carried away.

Even things that seem like they would compromise a ballot box often don’t. A Thurston County ballot box wasn’t significantly damaged last year when it was hit by an SUV.

And in King County, a collision with a school bus failed to destroy a ballot box a few years back, Wise said. 

“The box was fine,” Wise said. “The school bus, not so much.”


Your ballot box questions, answered: 

  • Where to find them: In King County, a list of ballot drop boxes with a map of their locations can be found here, on the King County Elections website.

    For other counties, the county auditor or elections department typically maintains a public list of ballot drop boxes on its website. Here is a map of county election departments, with links to their respective websites.

  • How often they're emptied: State law requires county elections officials to make sure ballot boxes are not overflowing. Most counties do regular pickups throughout the 18-day-voting period, though schedules vary. In King and Snohomish counties ballots are retrieved from drop boxes daily, with additional pickups on Election Day and the day before. In Pierce County, pickups general occur every 48 hours, then more often in the final two days of voting.

  • How fast ballots in drop boxes are counted: Placing a ballot in a drop box by election night generally increases the speed at which your ballot is counted, compared to mailing it on Election Day or the day before. Most of the results released the days after the election are from late-arriving ballots that are mailed, elections officials say. In King County, if you place your ballot in a drop box by the Monday before the election, your ballot most likely will be tallied in the results released on election night. In Snohomish County, all ballots collected from drop boxes the weekend before Election Day will appear in the first release of results, as will many ballots collected on Monday. 

  • Voting deadlines: Ballots must be postmarked by Election Day or placed in a drop box by 8 p.m. on Election Day to be counted. But elections officials say there is no need to wait that long. They encourage people to return their ballots sooner. Voting early not only ensures you won't miss the deadline, but means the results released on Election Night will present a fuller picture, said Halei Watkins of King County Elections.


Crosscut is working to get you the information you need to cast your ballot this November. If you have questions about Washington state candidates and issues, submit them here. If you’re wondering about the process of voting, you can direct those questions here.

About the Authors & Contributors

Melissa Santos

Melissa Santos

Melissa Santos is Crosscut’s staff reporter covering state politics and the Legislature.