Before revision:  depending on their own political alignment . Partisan accounts, especially conservative ones, tend to receive more followers,  follow more automated accounts , and find themselves in echo chambers . Conservative accounts are  exposed to more low-credibility content . Liberal accounts are exposed to moderate content shifting their experience toward the political center, while the interactions of conservative accounts are skewed toward the right. We find some evidence of central bias in the news feed ranking algorithm for partisan accounts. These findings help inform the public debate about how social media shape exposure to political information .
After revision:  depending on their own political alignment . Partisan accounts, especially conservative ones, tend to receive more followers, follow more automated accounts , and find themselves in echo chambers . Conservative accounts are exposed to more low-credibility content .