I think what happened in the case of Mr. Chiu was that on the same day that a poll came out that showed that the Conservatives might achieve a minority government, this massive campaign of disinformation on multiple Chinese-language websites directed at people in Canada appeared. It was a matter of gathering information.
I mobilized some friends in the Honk Kong community to go through the Internet to try to find out where it came from, and we failed to do so. I think it's really that it happened too fast, and immediately Mr. Chiu's numbers started to plummet as soon as the thing came out.