Tech giant Google has “interfered” in elections in the United States 41 times since 2008 to censor speech and boost certain Democrats, according to a right-of-center watchdog group.

Researchers found repeated examples in which Google “utilized its power to help push to electoral victory the most liberal candidates … while targeting their opponents for censorship,” according to a Media Research Center report published Monday. The influential subsidiary of Alphabet Inc., sought to prop up failed Democratic presidential nominee Hillary Clinton through its search algorithm in 2016, according to the report, though the pattern of Google’s interference efforts “can be traced back to 2008,” the group alleged in the report.