The job of a political analyst is to have a theory of what is happening and why, and what will happen and why. But an analyst also has the responsibility to ask: Am I right? Are things changing? Have there been events or circumstances that alter what was expected to happen? Has an inflection point been reached? And, if the current theory isn't going to play out, what will? Here's one example. While most of the attention in recent days has focused on the Donald Trump spectacle taking place in the Republican presidential nomination fight, is there reason to wonder whether the contours of the Democratic side or even the general election are also shifting? Up until now, the controversy regarding then-Secretary of State Hillary Rodham Clinton's private email server has been one that has consumed only those who fit into one or more of the following categories: conservative Republicans, regular Fox News-watchers, conservative talk-radio listeners, or Clinton-haters (both professional and amateur). In probably a hundred conversations or Q&A periods I have had in which the email server came up,

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