Assertion: caucus's candidate | /r/CapableOf | poll at above 15 percent
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Source sentences:
text: [W]e found that the 2020 contest not only has the largest number of contenders within 10 points of the polling leader [Sanders], but also is tied for the most candidates polling at or above 15 percent, with one candidate [Warren] polling just under that threshold," writes FiveThirtyEight.