No one can be added or removed from a ballot after the votes have been counted,
Sure one can...just do it and recalculate.
so by this distinction there is no such thing as an IIA spoiler.
I believe there is.
Compute the winner.
Start removing candidates and see if you can get the winner to change.
If the winner changes, you have a spoiler via IIA.
ICC is just a weaker version of IIA, and has to be weaker because nothing can pass IIA and meet three other desirable criteria.
What ICC and IIA are you using?
On what basis do you call the ICC a weaker version of IIA?
Does your statement imply that if a method passes Dr. Arrow's IIA, it must pass Dr. Tidemans ICC?
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