[werdnapk]

It's mentioned explicitly in the article:

"Elections Alberta salts the electors’ lists with the names of fake voters, so if one copy of a list is leaked, the agency can trace its origins. An analysis determined the list came from the Republican Party of Alberta, headed by Cam Davies, who, like Parker, has a well-documented history in Alberta as a political operative who pushes boundaries."

[extraduder_ire]

Do they have enough redundant fake entries, to prevent someone comparing two or more lists to find out which entries are fake? (either multiple lists supplied to the same person, or lists supplied to different people)