Now - you have a wide field with many options - but the early numbers show Sanders has retained his considerable core - and is picking off voters who would potentially go for an alternative as well.

What helps him greatly is that all of the candidates are essentially parroting his talking points from 2016 that became so popular with voters (MCA, affordable housing, health care as a right, stay out of endless wars, revolutionizing energy industry to combat climate change etc...) He really coined much of the where the debate is in 2019.

I do think that Biden's entry will add considerable complication to the current makeup of the race.

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