Meanwhile, the first major election to be officially postponed, and the subsequent legal challenge:
https://www.yahoo.com/news/wisconsin...144347298.html
Worth noting - this would actually allow many state and local elected officials to stay in office past their normal term of office, effectively a test of whether an emergency declaration can be used by the sitting government to stay in power. While in this case, allowing the county tax collector to remain in office may not be a likely path to world domination, the principle being tested is pretty damn important.
Also cited in the case, elections continued as usual during the 1918 flu epidemic as well as the War of 1812.