TikTok's founding myth is that anyone can go viral, whether they have 15 followers or 15 million. That may be an exaggeration, but it's true that influencers tend to come out of nowhere on the short video platform, and often fade back into obscurity just as quickly. This presents a quandary for brands looking to reach Gen Z on their social network of choice. Alexandra Mondalek examineshow influencer partnerships work on TikTok. Elsewhere, how is fashion voting in tomorrow's US presidential election?