The first votes to be cast in the 2020 Democratic presidential primary are still almost a year away and only a handful of potential candidates have announced their intention to run. Over the next few months, it is likely that more will enter the race and, in the lead-up to the debates this summer, all of the candidates will fill in the missing pieces of their platforms. All of that means that Democratic voters have a lot to learn before it comes time to commit to a particular candidate.

None of that has stopped pollsters from attempting to tell us who is leading the pack. A recent poll by Emerson of potential Iowa caucus-goers is pretty indicative of what we’ve seen from national polls so far.

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