According to Article 276(1) of the 1992 Constitution of Ghana, a chief shall not take part in active party politics; and any chief wishing to do so and seeking election to Parliament must ............................

Article 276(1) of the 1992 Constitution of Ghana explicitly states that a chief is prohibited from engaging in active party politics.

If a chief desires to participate in active party politics and seek election to Parliament, they must relinquish their traditional office. This act of relinquishing a stool (for Akan chiefs) or skin (for Northern chiefs) is known as abdication.

The complete statement is: 10. According to Article 276(1) of the 1992 Constitution of Ghana, a chief shall not take part in active party politics; and any chief wishing to do so and seeking election to Parliament must abdicate their stool or skin.

The final answer is $\boxed{\text{abdicate their stool or skin}}$.