So dead voters outnumber dead candidates by a factor of 25.

https://www.google.com/search?q=david+andahl

What should happen when people vote by mail (or otherwise in advance) and then die before election day?

Not surprising in the least - that's what one gets when the Election day is right after All Souls' Day [0].

[0] - https://en.m.wikipedia.org/wiki/All_Souls%27_Day