Melinda Wadsley, an Iowa presidential elector candidate for the Republican Party, has resigned. The Republican Party will be allowed to replace her with someone else. See this story.
In Iowa, as in 44 other states, the names of presidential elector candidates do not appear on the November ballot. Five states still print the names of presidential elector candidates on the ballot. It is not clear how a resignation would be handled in those five states, which are Arizona, Idaho, North Dakota, Oklahoma, and South Dakota, especially if the ballots had already been printed.