Is;nt it a bit too coincidental that the shooting happens BEFORE the army and civil service vote which have TRADITIONALLY voted for the KMT and that Chen calls off the election so that immediatly disqualifies 700 000 ~ 1 000 000 KMT voters from the election...
however it would have been too risky to stage an assualt like that and it doesnt look planned. that guy didnt look like much of a marksman. IF he WAS hired by someone wanting to assassinate him (Lien , China) they would probably have been provided with a decent weapon and one that could take him out long range.
FALSE, he tried to use this as backing for his election but if the recount fails then hes committed political suicide... (i hope this happens)

*China shall re-establish control over its long lost territories...*