I don't know. Reid lied about Mitt's taxes, but there'd not have been a lie if Mitt had just released the same as other candidates. And, responsible outlets noted Reid had not disclosed how he got the info. But the effect is sort of the same, the negatives of a candidate are driven up by an intentional lie. And in this case the mainstream isn't really covering Hillary because it's so early.
Imo the RW outlets, and their "info" consumers are different. They don't care if it's a lie, it's what they want, so truth doesn't matter. I mean sure we see the same with people who are adamantly tied to slave reparations or some nutty theory. But, it seems to me the RWers are treated with some respect they certainly don't deserve.