How many letters does the top answer for “an inclination to weigh both views or opinions equally” have?

The most common answer is impartiality (12 letters).

Crossword clue: an inclination to weigh both views or opinions equally

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

impartiality 12 letters wn-def

an inclination to weigh both views or opinions equally

nonpartisanship 15 letters wn-def

an inclination to weigh both views or opinions equally