Neutrality is not fact based, is the thing. forget the current candidates for a moment, since they have a lot of emotional investment: consider an issue like, say, vaccines. If you were to give equal consideration to both doctors vouching for their effectiveness, and some anti-vaxxers that think they’ll kill you, you would technically be neutral on that “argument”, but you would actually be biased in favor of the anti-vaxxers in doing so, because the reality of the situation is that they are simply wrong, and suggesting that both sides are equally valid by giving equal weight to their statements paints them in a better light than that. Now, for political candidates, things arent quite as simple as that, because they dont represent one single statement that can be physically demonstrated to be correct or wrong, but they do take actions that can be more or less helpful, or endorse ideas that can be shown to work or not work, or make statements that can be more or less objectively correct, and one can take a sum total of these things and suggest that one candidate or the other would have more or less desirable effects on the country than the other. Indeed, unless the candidates are exactly the same, one of them generally will. Which implies that treating them as if their positions are equally effective and their ideas equally valid is biased in favor of the worse candidate, whoever that might be, and thus, if you wish to reduce that effect, a journalistic organization should endorse the one their research leads them to conclude is preferable.