Some users on X who spend their days sharing content that includes election misinformation, AI-generated images and unfounded conspiracy theories say they are being paid "thousands of dollars" by the social media site.
The BBC identified networks of dozens of accounts that re-share each other's content multiple times a day - including a mix of true, unfounded, false and faked material - to boost their reach, and therefore, revenue on the site.
They also say they coordinate sharing each other’s posts on forums and group chats. "It's a way of trying to help each other out," one user said.
Some of these networks support Donald Trump, others Kamala Harris, and some are independent. Several of these profiles - which say they are not connected to official campaigns - have been contacted by US politicians, including congressional candidates, looking for supportive posts.
On 9 October, X changed its rules so the payments made to eligible accounts with a significant reach are calculated according to the amount of engagement from premium users - likes, shares and comments - rather than the number of ads under their posts.