Which word best describes a person displaying a strong partisan point of view?

A person displaying a strong partisan point of view is best described as tendentious. This term indicates a bias or a strong inclination towards a particular perspective or agenda, often leading to a one-sided portrayal of information. When someone is tendentious, they are actively promoting a specific viewpoint, which aligns with the characteristics of partisanship.

In contrast, the other terms suggest a lack of bias. Impartial and neutral both imply a fair and balanced approach, while objective refers to a perspective that is based on observable phenomena and facts rather than personal feelings or opinions. These words do not capture the essence of someone who is firmly rooted in a particular partisan viewpoint. Thus, tendentious accurately encapsulates the idea of strong partisanship.