Reddit announced an update to its policy for political advertising that will require campaigns to leave comments open on ads for the first 24 hours.
https://techcrunch.com/2020/04/13/reddit-announces-updates-including-a-new-subreddit-to-increase-political-ad-transparency/
https://techcrunch.com/2020/04/13/reddit-announces-updates-including-a-new-subreddit-to-increase-political-ad-transparency/