Must be a major election or referendum.

If it's just some lower-level political operatives with rigging limited to their district that might not be enough to resolve YES.

It has to be actual messing with the votes, not just CIA messing with the election by putting out propaganda or gerrymandering or whatever.

I won't bet.

Will resolve YES if the allegations are significantly high-profile, even if I don't necessarily believe them.

What constitutes a "high-profile" allegation may result in some controversy.

No rhyme or reason behind that list of countries, don't try to generate patterns where there are none.