Voters in one Iowa county of 9,000 cast their ballots the same way people purchase a Big Mac: in the drivethrough. The Bloomfield Fire Department, the usual polling location for Bloomfield, served all of Davis County’s eight sites this year. Cars could pull into the emptied equipment bays — where the firetrucks normally sit — and drivers could vote behind the wheel and then pull forward to exit. All across Iowa, COVID-19 precautions changed the 2020 primary with a huge vote-by-mail push and other steps like curbside or drive-through options happening Tuesday. Rural counties, with fewer options for buildings, got creative.