“Polls can have their own politics, and media polls are often accused of being tendentious [tɛnˈdɛnʃəs].” — Joseph Epstein, The Wall Street Journal, 26 Oct. 2021

tendentious
adj

formal word
used disapprovingly
to describe someone or something expressing a strongly biased point of view in a way that may cause argument.

In the latter half of the 19th century, English users took the Latinate stem tendenti- (from tendentia, meaning “tendency”) and combined it with the familiar adjective suffix -ious to form a word describing someone with a tendency to favor a particular point of view, motivated by an intent to promote a particular cause.

English