“Twitter amplifies tweets from right-leaning political parties and news outlets more than from the left, its own research suggests. The social-media giant said it made the discovery while exploring how its algorithm recommends political content to users. But it admitted it did not know why, saying that was a ‘more difficult question to answer’. Twitter has previously faced claims of anti-conservative bias on its platform. Twitter’s study examined tweets from political parties and users sharing content from news outlets in seven countries: Canada, France, Germany, Japan, Spain, the UK, and the US, analyzing millions of tweets sent between April and August 2020.”
“Researchers then used the data to see which tweets were being amplified more on an algorithmically ordered feed compared with a reverse-chronological feed, both of which users have an option of using. They found that mainstream parties and outlets on the political right enjoyed higher levels of ‘algorithmic amplification’ compared with their counterparts on the left” – BBC.