Joe Biden's campaign manager, Greg Schultz, expressed confidence overnight that the Iowa caucuses showed "a tight race with bunched up candidates," adding it was “a great night for us.” "We are thrilled with our performance across the state," he said. "We have known for months that this contest was going to be extremely close — and that is confirmed by tonight’s caucuses," Schultz added. "There is no official Iowa Democratic Party data at this time — and any data being shared are from campaign internal metrics or head counts. The campaign's own model showed Biden "overperformed in key districts we...