Donald Trump is a clear leader in national polls, but for how long? If it was anyone else, would we be more impressed? On The Gist, Harry Enten from FiveThirtyEight explains how Trump's inevitable fall from the top of GOP candidate polls could happen, and how we should consider early, early polling data. For the Spiel, don't forget that Hillary Clinton loves her mom. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at slate.com/gistplus.

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