U.S. Representative Alexandria Ocasio-Cortez, a Democrat from New York, speaks during a campaign rally for Senator Bernie Sanders, an Independent from Vermont and 2020 presidential candidate, not pictured, in Sioux City, Iowa, U.S., on Sunday, Jan. 26, 2020. New polls showed the unsettled state of the Democratic primary days before the first voters weigh in at the Iowa caucuses, with front-runner status still unclear.
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