OK. To me, an edged weapon is a knife or sword or some such thing. Maybe a spear. That's a side issue anyways. The assailant clearly had a weapon in hand and he was clearly moving to harm the candidate on stage. That merits serious charges and consequences.That was not plastic it was metal...the ears were very pointed and well would make holes in flesh.
The nature of the weapon makes a difference in one sense. Had it been a knife, the charge could easily rise to attempted murder. Less clear with a less deadly weapon.