While much of the focus is on the Iowa result, it is a small, largely white, state – the key results for the presidential nominee will come in on March 3.
Pete Buttigieg and Bernie Sanders take the lead in Iowa after a debacle with the results reporting - now the candidates move on to New Hampshire, where Sanders is the favourite.
While Bernie Sanders is polling strongest in Iowa, Joe Biden remains the national frontrunner for the Democratic nomination.
AAP/EPA/Peter Foley
Despite a drop in support after the first Democratic presidential debate, Joe Biden’s perceived electiability is serving him well in the race to secure his party’s nomination.