WATCH LIVE: Trump rallies in Iowa with GOP Senate candidate Ashley Hinson

On Thursday, Hinson will join President Donald Trump for a rally in Sioux City, which is in Iowa's conservative northwest corner. The visit to safe territory is geared toward boosting turnout even as it ties her more tightly to an unpopular president.

On Thursday, Hinson will join President Donald Trump for a rally in Sioux City, which is in Iowa's conservative northwest corner. The visit to safe territory is geared toward boosting turnout even as it ties her more tightly to an unpopular president.