The political landscape wasn't quite as polarized...as the 30 yr. shift to the right was just in it's infancy and both sides still socialized together after hours...
First I would like to say that I fully support Manning, and feel he should be pardoned. However, clearly the "intent" was different in the first two cases, as they both "intended" to break the law and intentionally deliver classified information to foreign nations. Manning at least is very clear about that. He knew the consequences of his actions, and decided it was worth it to him to do what he felt was right. But he certainly had "intent" to break the law. Even the republican FBI director couldn't find that kind of intent in Hillary's actions.