“At some point, it may be so difficult to run a primary that it has to be delayed,” said Rick Hasen, an election law professor at UC Irvine. … Hasen said some of the poll workers who have called in on short notice to replace those who declined to run election precincts during the health emergency would require training that could slow down the balloting. At the same time, he said, turnout could be relatively low because of voters opting to stay home.
Ohio governor calls for postponing Tuesday’s Democratic presidential primary
Los Angeles Times, March 16, 2020
March 16, 2020