Restrictions on formation of political parties
Section 222(e) · 1999 Constitution (2004 edition)
What Constitution says
(e) the name of the association, its symbol or logo does not contain any ethnic or religious connotation or give the appearance that the activities of the association are confined to a part only of the geographical area of Nigeria; and
This is the 1999 Constitution as published in 2004. Later amendments aren't included yet, so a section may have changed since.
Original source
Official Gazette · CFRN 1999 official PDF · printed page 98. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections