I found that this linked article crystallizes many of the things that made me a supporter of Sec. Clinton for the Democratic nomination.
While refraining from the pure nastiness that characterizes the present phase of the campaign, the author nevertheless presents a fairly withering criticism of Sen. Sanders and his campaign thus far.
It is a long read, but well worth it, because it is uses facts to construct an argument, which is always something worth considering.
It also raises interesting questions for me about the structure of the Massachusetts Democratic Party, and the composition of its elected officials– though these may be questions best left for a later time.