Surprisingly, it's true! In Canada, it is possible to obtain citizenship after holding PR status for just 1 year (instead of the usual 3 years).
Who is eligible for this right?
This expedited path to citizenship is available to individuals who were previously Canadian citizens but lost their citizenship for reasons other than revocation by the Canadian government.
If these former citizens later regain PR status, they need only one year of residency as a PR to qualify for citizenship, instead of the standard three years.
This information may be particularly relevant for those who renounced their Canadian citizenship at the request of their original country of citizenship. For example, this could apply to individuals who accepted lucrative offers to work in government or diplomatic roles in their original country.
In such cases, Canadian citizens renounced their citizenship, served 5–10 years in high-ranking positions abroad, retired, regained PR status in Canada, and after one year were able to "restore" their Canadian citizenship.