US presidential election 2020: The Iowa caucus, explained | ITV News

ITV News Washington correspondent Robert Moore explains what the Iowa caucus is, as the Democrats prepare to line name their candidate for the upcoming presidential election later this year. • Subscribe to ITV News on YouTube: http://bit.ly/2lOHmNj • Get breaking news and more stories at http://www.itv.com/news Follow ITV News on Facebook: https://www.facebook.com/itvnews/ Follow ITV News on Twitter: https://twitter.com/itvnews Follow ITV News on Instagram: https://www.instagram.com/itvnews/