The same mentality that causes them to omit question marks.
In a word: nothing.
All the information you seek, or wish to know, about a politician or candidate, is already out there.
Your wishing to know it simply means you have not seen it.
So, who do you expect to show it to you, after they have done the research. The media?? The national newspaperes of record?? TV stations?? Cable??
realize this one thing, and one thing only, and the remainder will be very clear:
----->The media cares less what you think, or what is the trvth (with a V), their sole and only purpose is to help elect a liberal socialist to every post they can influence, from the top down.<----
Once you understand that, the rest becomes clear.
It is up to the informed voter (dichotomy?) to seek information elsewhere on a particular candidate.