Hillary as Secretary of State
Hillary was able to convince a lot of people that she was a marginally better choice than Obama and so she tended to win the states with simple votes.
But when it came to attracting the committed to her side, getting the votes of those for whom it really mattered rather than votes of those with a mild preference, Hillary fell on her face. She couldn't do it.
The job of Secretary of State isn't a job of counting up votes of people with mild preferences. It's about getting countries with a serious stake in things to come over to your side.
Hillary proved to be incompetent at that. There's no way she'd be a competent Secretary of State.