A couple of Democratic candidates for president plan to visit Sioux City today. The Woodbury County Democratic Party reports a rally for California Senator Kamala Harris will take place at the Anderson Dance Pavilion. The event is expected to start at around 6 p.m. Also, tonight former Colorado Governor John Hickenlooper will attend a private event at the Truman Club in Sioux City. Democratic candidate for President and U.S. Senator from New York, Kirsten Gillibrand made a campaign stop in Sioux