The Jan. 31 ruling paves the way for fresh regional and general elections to be held here later this year.
Under the Guyana Constitution, elections must be held within 90 days of the motion of no confidence being passed.
Attorney General Basil Williams has since given notice that he intends to appeal the ruling.
Justice George-Wiltshire also said anyone who holds dual citizenship, as envisaged by Article 155 of the Guyana Constitution, “should not and could not be” a member of the Guyana Parliament.
She delivered her ruling in the three matters regarding the validity of the successful Opposition People’s Progressive Party (PPP) motion of no confidence.