It’s start with the children’s book and recent movie, Alexander and the Terrible, Horrible, No Good, Very Bad Day, then substitute Hillary Clinton for Alexander and year for day. Hardly original: A Google search of the revised title turns up more than 200,000 hits. But apt. Clinton’s 2015 started out looking so promising. Her second shot at the Democratic presidential nomination was as clean as non-incumbents ever get. The feeling that she had a good chance of winning the general election was consoling even to Democrats who weren’t her biggest fans.

Now, Democrats are getting extremely nervous: Her electoral prospects don’t look so sure. More voters now view Clinton unfavorably than favorably. Her once-strong leads over Republican opponents have shrunk to within the margin of error. Although most Democrats still dismiss the substance of the controversy over her State Department emails, even the most starry-eyed must acknowledge it has exposed her candidacy as far more fragile than in their worst nightmares.

So, what’s an anxious political party to do? It’s pretty clear that Joe Biden, the popular vice president,

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