Nigeria

No association by whatever name called shall function as a party, unless –
…
(b) the membership of the association is open to every citizen of Nigeria irrespective of his place of origin, circumstance of birth, sex, religion or ethnic grouping;
…
(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;
… (Sec. 222)

The National Assembly may by law provide –
(a) guidelines and rules to ensure internal democracy within political parties, including making laws for the conduct of party primaries, party congresses and party conventions; and
(b) the conferment on the Independent National Electoral Commission of powers as may appear to the National Assembly to be necessary or desirable for the purpose of enabling the Commission more effectively to ensure that political parties observe the practices of internal democracy, including the fair and transparent conduct of party primaries, party congresses and party conventions;
(c) for an annual grant to the Independent National Electoral Commission for disbursement to political parties on a fair and equitable basis to assist them in the discharge of their functions;
… (Sec. 228)