There are a few theories about attempted assassination of Taiwan's President Chen:
1. the KMT hired an assassin to kill Chen;
2. the DPP staged the event to garner sympathy votes;
3. China hired an assassin to kill Chen;
4. A gambler with a big bet on Chen losing did it.
I think the first two are unlikely as both sides lose more from the attempt than they gain. I believe that Friday's events overshadow other aspects of the election; including the failure of the referendum to pass.
I do have more to say, but fatigue has me feeling as if my thoughts must wade through the thick soup of my mind before breaking free into the air.