My main problem with Hillary is not her pragmatism or even her "liberal creds" on domestic and social issues: it is that she is far too hawkish on the military/interventionist front. Her single vote for the Iraq debacle is a black mark that is virtually impossible to erase, and all the talk about how knowledgeable she is on...well, everything...makes that vote even worse. She should have known the correct way to vote (Bernie did) and she voted the wrong way, most people seem to presume for political purposes. If it was not a pure political maneuver, then it is very strong evidence that she would, as commander in chief, be more likely to err on the side of bombing, invading and killing than on the side of peace and diplomacy.
I'm not sure how I can vote for a candidate who is supposedly so well versed in detail and understanding of the issues and process, yet who made such a glaringly wrong choice.