§1. The following have the right of election, both active and passive, in constituting a presbyteral council: 1/ all secular priests incardinated in the diocese; 2/ secular priests not incardinated in the diocese and priests who are members of some religious institute or society of apostolic life, who reside in the diocese and exercise some office for the good of the diocese.
§2. To the extent that the statutes provide for it, the same right of election can be conferred on other priests who have a domicile or quasi-domicile in the diocese.
Source: Code of Canon Law (Vatican.va)