# 1. Load voting districts and counties
il_vtd <- voting_districts(state = "IL", year = 2020, class = "sf")
il_counties <- counties(state = "IL", year = 2020, class = "sf")

Leaflet map

## Warning: sf layer has inconsistent datum (+proj=longlat +datum=NAD83 +no_defs).
## Need '+proj=longlat +datum=WGS84'
## Warning: sf layer has inconsistent datum (+proj=longlat +datum=NAD83 +no_defs).
## Need '+proj=longlat +datum=WGS84'
## Warning: sf layer has inconsistent datum (+proj=longlat +datum=NAD83 +no_defs).
## Need '+proj=longlat +datum=WGS84'