SPRINGFIELD, IL (March 12, 2020) Public health experts continue to learn about COVID-19, but based on current data and similar coronaviruses, spread from person-to-person happens most frequently among close contacts (those within about six feet) via respiratory droplets. One primary measure discussed in this guidance will be cleaning of visibly dirty surfaces followed by disinfection – a best practice for prevention of COVID-19 and other viral respiratory illnesses in election polling locations.

https://www.elections.il.gov/Downloads/Misc/PDF/COVID-19%20Interim%20Guidance%20Election%20Polling%20Places.pdf