President Trump may be threatening to shut TikTok's US operations and Joe Biden's campaign squad have effectively been barred from using the video-sharing app - but that hasn't stopped their fans using it to connect with young voters.
The Conservative Hype House, a group account for a number of right-wing content creators, has been posting videos featuring an identifying code assigned by the official Trump campaign - "CHH" - that allows users to join its text-alert service.
And about six days ago, a rival Democrat group began promoting Mr Biden's rival SMS updates.
The Conservative Hype House is one of the biggest political accounts on the app, with 1.5 million followers.
And during the past month, several of its videos have urged users to download the Official Trump 2020 App, directing them to a link in the channel's biography rather than directly to Apple or Google's app stores.
Two of them alone, posted in mid-September, mocking Mr Biden, have amassed more than 300,000 views and 50,000 "likes".
Asked why the Democrat Hype House was not urging TikTok users to text Mr Biden's campaign, one member replied: "This isn't a very good answer but I think that it just never really occurred to us."
And within a day it had posted a video directing its almost 152,000 followers to do just that - and download the campaign app.
One theory is the information is being used to identify which campaign messages drive the most texts and downloads.
"This type of profiling helps campaigns know what to say to each individual voter," long-time digital marketer Seth Cargiuolo says, "what topics to email, call, and text about, what issues are important to that voter, what campaign surrogate voices may resonate with that voter, what kind of merchandise to offer to them, as well as model their behavior and score their likelihood of showing up to vote."