Sanders leads in Iowa with 20% support, up 5 percentage points since November. Elizabeth Warren is in second place at 17%, virtually tied with Pete Buttigieg at 16%, leaving national front-runner Joe Biden in fourth place at 15%.
Sanders leads in Iowa with 20% support, up 5 percentage points since November. Elizabeth Warren is in second place at 17%, virtually tied with Pete Buttigieg at 16%, leaving national front-runner Joe Biden in fourth place at 15%.