2020 Democratic race is wide open in Iowa as caucuses near

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DES MOINES, Iowa (AP)-- Presidential candidates have swarmed Iowa’s rolling landscape for more than a year, making their pitch to potential supporters on college campuses, county fairgrounds and in high school gymnasiums.

Three weeks before the caucuses usher in the Democratic contest, the battle for the state is wide open.

A cluster of candidates, including Bernie Sanders and Elizabeth Warren, along with Joe Biden and Pete Buttigieg, enters the final stretch with a plausible chance of winning Iowa's caucuses. A poll released Friday by The Des Moines Register and CNN found them all with similar levels of support.