No municipality may enact any charter provision or ordinance prohibiting the circulation of petitions for any local initiative. A petition related to any local initiative, including, without limitation, petitions filed under section 2522, section 2528, subsection 5, the Constitution of Maine, Article IV, Part Third, Section 21, or a municipal charter provision authorizing local initiatives, may be circulated as provided in Title 21?A, section 903?A. [RR 1999, c. 1, §43 (COR).]