Questione giuridica chiave
Whether the constitutional challenge was timely despite being filed before promulgation after the optional referendum period.
Decisione estratta
Premature filing did not bar admissibility; the case could be heard, although such filings usually only justify suspension.
Motivazione estratta
For referendable cantonal statutes, the federal deadline runs from promulgation, not from initial publication. An early appeal is not inadmissible as such.