P.A.Sangma vs. Pranab Mukherjee

The Supreme Court's split decision in this case raises some interesting issues.  In this article, I touch upon two such issues within the limitations of space. One is why the CJI has never been in a minority.  I  would agree that the CJI being in a majority in most cases cannot be just a coincidence.  But  I am equally intrigued what could convincingly explain this phenomenon.  The second issue is what I think many have missed in this debate - except those campaigning against death penalty.  When the Supreme Court admitted Sangma's petition against Mukherjee, should it not have restrained Mukherjee from taking irreversible decisions till it disposed the petition?