The Action Contesting an Elective Office, civil electoral lawsuit of knowledge with desconstitutive purpose is an important instrument for the defense of democracy.
I don´t know if "desconstitutive" is an english word. If yes, no problem. If no, I suggest changing
for the verbs: create, change and nullify.
(The Action of Contesting an Elective Mandate - a civil electoral lawsuit aiming to create, change or nullify a juridic act - is an important instrument for the defense of democracy.