You're misrepresenting the article. Here's what it actually said:Did you bother to read the paper? And a study that they cite showed an astounding 82% of liberals would openly admit to at least some level of prejudice towards conservative job applicants, while 67% of moderates and 83% of conservatives would feel no such prejudice.
Their survey posed the question: "If two job candidates (with equal qualifications)
were to apply for an opening in your department, and you knew that one was politically quite conservative, do you think you would be inclined to vote for the more liberal one?” Of the 237 liberals, only 42 (18%) chose the lowest scale point, “not at all.” In other words, 82% admitted that they would be at least a little bit prejudiced against a conservative candidate, and 43% chose the midpoint (“somewhat”) or above. In contrast, the majority of moderates (67%) and conservatives (83%) chose the lowest scale point (“not at all”).
"Not favouring liberals" does not necessarily imply "not prejudiced."
Also, the question seems rather strange. One way to take it would be "if all else is equal, would you flip a coin to choose between the two candidates, or pick the one you'll probably get along with better?"