It’s almost certain there will be questions about the integrity of the 2022 midterm elections. In fact, some concerns about machine counting have already sparked one Nevada county to seek to hand-count all ballots. Several scholars of elections have written for The Conversation U.S. about ways to ensure voting is conducted and counted fairly and accurately. It all starts with paper ballots.

1. Paper is secure

Paper ballots, including those sent by mail, are not ripe for fraud, reported election law scholar Steven Mulroy at the University of Memphis: “[H]aving a paper ballot is a key way to protect public trust in elections, allowing recounts in case machines are hacked or suffer software or hardware problems that could affect vote counting.”

Even when many people vote by mail, which Mulroy also says is a secure method of voting: “Vote-by-mail states have not seen a higher rate of election fraud cases than states with strict rules on who can vote absentee, according to a database of fraud cases compiled by the Heritage Foundation, an organization concerned about voting fraud.”

Read more: How to protect elections amid the coronavirus pandemic

2. Paper is key

In fact, paper ballots are the best way to ensure the votes are counted correctly, wrote Herbert Lin, a Stanford cybersecurity scholar:

“If hacked, an electronic voting machine cannot be trusted to count votes accurately. In an election conducted with paper ballots, the ballots themselves can be examined and recounted.”

“The idea of recounting electronically cast votes is meaningless,” he wrote. Without something physically marked by each individual voter, “[a]ny problems … would be impossible to fix, calling into public question the integrity of the whole process and the validity of any results.”

Read more: Iowa caucuses did one thing right: Require paper ballots

3. Manual counts aren’t necessary

But using paper ballots doesn’t mean counting has to happen by hand.

Computer scientist Eugene Vorobeychik at Vanderbilt University has studied ways to count votes by machine – which is much faster than by hand – while still ensuring accuracy. Essentially, he said, paper ballots can help confirm – or not – a vote tally in the event of an audit.

“[A]fter the election,” he wrote, “auditors can compare electronic voting results to the results documented in the paper trail. If they don’t agree, then something has gone wrong – either accidentally or as a result of outside interference – and a newly verified tally of the actual paper votes can be used to determine the winner.”

Read more: Paper trails and random audits could secure all elections – don't save them just for recounts in close races

Editor’s note: This story is a roundup of articles from The Conversation’s archives.