The Bernie Bus in Davenport Friday Credit: Paul HeintzSupporters at Danceland Ballroom in Davenport on Friday Credit: Paul HeintzThe crowd at a Friday rally in Davenport, Iowa Credit: Matthew TerryThe crowd at a Friday rally in Davenport, Iowa Credit: Matthew TerryBernie Sanders speaks at a Friday rally in Davenport, Iowa Credit: Matthew TerryBernie Sanders speaks at a Friday rally in Davenport, Iowa Credit: Matthew TerryBernie Sanders speaks at a Friday rally in Davenport, Iowa Credit: Matthew TerryBernie Sanders speaks at a Friday rally in Davenport, Iowa Credit: Matthew TerryDubuque Credit: File: Paul HeintzBernie Sanders speaks in Dubuque Credit: Paul HeintzVampire Weekend performs in Iowa City Saturday night Credit: Adam BurkeVampire Weekend’s Ezra Koenig Credit: Adam BurkeBernie Sanders speaks at an Iowa CIty rally on Saturday Credit: Adam BurkeBernie Sanders speaks at an Iowa CIty rally on Saturday Credit: Adam BurkeBernie Sanders speaks at an Iowa CIty rally on Saturday Credit: Adam BurkeBernie Sanders speaks at an Iowa CIty rally on Saturday Credit: Adam BurkeJosh Hutcherson speaks at a Saturday Bernie Sanders rally in Iowa City Credit: Adam BurkeCornel West speaks at an Iowa City rally for Bernie Sanders Saturday night Credit: Adam BurkeCornel West speaks in Iowa City Credit: Adam BurkeA rally in Iowa City on Saturday Credit: Adam BurkeBernie Sanders in Manchester, Iowa on Saturday morning Credit: Paul HeintzCook County, Illinois Commissioner Jesús “Chuy” García speaks at a Bernie Sanders rally in Cedar Rapids, Iowa on Saturday. Credit: Paul HeintzCornel West hugs Congressman Keith Ellison at a Bernie Sanders rally in Cedar Rapids, Iowa on Saturday. Credit: Paul HeintzCornel West at a Bernie Sanders rally in Cedar Rapids, Iowa on Saturday. Credit: Paul HeintzBernie Sanders in Cedar Rapids, Iowa on Saturday Credit: Paul HeintzA young Bernie Sanders fan in Cedar Rapids, Iowa on Saturday Credit: Paul HeintzBernie Sanders speaks in Waterloo, Iowa on Sunday Credit: Paul HeintzThe crowd at a rally in Waterloo, Iowa on Sunday Credit: Paul HeintzJim Dean, chair of Democracy for America, at a Sunday rally in Des Moines Credit: Paul HeintzMembers of the band Foster the People at a Des Moines rally on Sunday. Credit: Paul HeintzBernie Sanders’ Iowa state campaign coordinator Pete D’Alessandro speaks in Des Moines. Credit: Paul HeintzBernie Sanders speaks at a rally in Des Moines Sunday. Credit: Paul HeintzBernie Sanders speaks to volunteers at Des Moines headquarters Monday morning. Credit: Paul HeintzThe Bernie Bus leaves Des Moines headquarters Monday morning. Credit: Paul Heintz