correction
A previous version of this article incorrectly said that Woodbury County Supervisor Jeremy Taylor had been charged in the voter-fraud case in which his wife was convicted. He was not charged. The article has been corrected.
As Tam and Thien Doan tried to file for absentee ballots in Iowa in 2020, they were surprised to find out that votes had already been cast in their names. The siblings, both Democrats, were even more astonished to learn that their ballots had been cast in support of Republican candidates only, including President Donald Trump, according to court testimony.