if they can be done.
https://www.brennancenter.org/
Recommendations to Defend Americas Election Infrastructure
https://www.brennancenter.org/election-security
Require paper ballots. Paper ballots create a tangible record of a voters choices that the voter can review, prior to casting the ballot, to ensure it accurately captures their intent. These records can then be used by election officials to discover any errors in the voting tabulation system, and ultimately ensure that total election results were recorded correctly. All voting systems should use paper ballots in order to make effective auditing and confirmation of results feasible.
Ban wireless components. Wireless components that permit connections to WiFi networks, cellular networks, or other devices, via Bluetooth or other protocol, pose an unnecessary risk of malware being implanted in this equipment, unbeknownst to election administrators. Wireless components should be prohibited in voting systems that record and tabulate votes. Voting system components that do not tabulate votes should limit wireless connectivity only to instances necessary for accessibility.
Implement robust post-election audits. Replacing paperless voting machines is not enough on its own to ensure accurate election resultselection officials must use these paper ballots to conduct rigorous and routine post-election audits that are designed to provide a high level of statistical confidence of the correct outcome. We recommend the regular use of risk-limiting audits. Risk-limiting audits provide confidence in election outcomes because they limit the risk that a voting system error or hack significant enough to affect the outcome of an election will go undiscovered. A sample of ballots is examined by hand and compared to the results recorded by the voting system to look for discrepancies. For contests with large reported margins of victory, a smaller sample is required to reduce the risk of error than for contests with small reported margins of victory. Therefore, risk-limiting audits can be performed on a regular basis, unlike costly full hand recounts.