A new article by Shawn Musgrave at Politico had the story:

With Georgia’s special House election going down to the wire, it’s no shock that Twitter is saturated with Democrat Jon Ossoff and Republican Karen Handel. But what is surprising is just how much of the traffic traces to a single, identifiable source. Accounts related to one entrepreneurial Donald Trump supporter, Robert Shelton, aka @RobertsRooms, have flooded hashtags about the 6th Congressional District election with anti-Ossoff and pro-Handel messaging.

Also, the article revealed the mechanisms are not automated in this instance:

Tamara Leigh, another player in social media management for Trump-leaning political candidates, who said she worked with Shelton on the Faulkner campaign, said there are no bots — that is, mechanically generated traffic — in this line of social media promotion. Rather, she explained, hired social media guns of both parties pay “like-minded” Twitter users to get campaign messages trending. They’re still working out how to use Twitter to maximize benefits for their clients.

“I think it’s exciting — you’re going to see more of this in 2018,” said Leigh.

Here is a taste of what they are posting:

Also, the New York Times did a recent write-up about the growing use of twitter bots in politics that you should take a look at. Here is an excerpt:

On social media, our political battles are increasingly automated. People who head to Twitter to discuss their ideals are, often unwittingly, conversing with legions of bots: accounts preprogrammed to spew the same campaign slogans, insults or conspiracy theories hundreds or thousands of times a day. And one of their most competitive battlegrounds is the prime digital real estate that opens up every time President-elect Donald J. Trump tweets. Any supporters or critics who reply quickly enough to Mr. Trump can see their own tweets showcased right beneath the biggest spectacle on Twitter. But in this fast-draw contest, propaganda bots always best human beings.