The latest news on this front comes from a really interesting article at the UK-based Guardian:

By design, tens of millions of votes are cast across America on machines that cannot be audited, where the votes cannot be verified, and there is no meaningful paper trail to catch problems – such as a major error or a hack.

For almost 17 years, states and counties around the country have conducted elections on machines that have been repeatedly shown to be vulnerable to hacking, errors and breakdowns, and that leave behind no proof that the votes counted actually match the votes that were cast.

Now, in a climate of fear and suspicion over attacks to America’s voting system sparked by Russia’s interference in the 2016 elections, states and counties across the country are working to replace these outdated machines with new ones. The goal is to make the 2020 elections secure.

See the full article here.