KUALA LUMPUR, April 27 -- Negeri Sembilan remains in a state of political paralysis as a rare royal constitutional dispute has snowballed into a power tussle that threatens to end Menteri Besar (MB) Datuk Seri Aminuddin Harun's leadership.

As of Tuesday morning, the PKR leader is clinging to power following a dramatic withdrawal of support by his coalition partners, while federal leaders scramble to prevent a total collapse of the state government.

Here is the latest update on the unfolding situation:

The dispute over the throne

The crisis originated within the state's unique customary structure, Adat Perpatih. On April 19, the four Undang Yang Empat (territorial chieftains) declared they were "deposing" the reigning Yang di-Pertuan B...