"D’Alessandro is one of six Democrats vying to challenge Republican incumbent U.S. Rep. David Young in Iowa’s 3rd District.
Beyond supporting a political ally, Sanders’ return to Des Moines is also likely to be read as another signal of his potential interest in running for president again in 2020. He headlined a convention of the liberal Iowa Citizens for Community Improvement group last summer and appeared in Iowa City for a stop on a book tour last fall."
https://www.desmoinesregister.com/story/news/politics/2018/02/12/bernie-sanders-returns-iowa-feb-23-rally-pete-dalessandro/331893002/
Beyond supporting a political ally, Sanders’ return to Des Moines is also likely to be read as another signal of his potential interest in running for president again in 2020. He headlined a convention of the liberal Iowa Citizens for Community Improvement group last summer and appeared in Iowa City for a stop on a book tour last fall."
https://www.desmoinesregister.com/story/news/politics/2018/02/12/bernie-sanders-returns-iowa-feb-23-rally-pete-dalessandro/331893002/