Rob Sand maintains a commanding lead in the Iowa Democratic primary for governor because he is the only candidate with a filed campaign and meaningful party support heading into the June 2 vote. After Julie Stauch was disqualified and Paul Dahl did not file, Sand faces no organized opposition and has spent the past year building statewide visibility through town halls, policy proposals on rural health care and cancer rates, and strong fundraising. This lack of competition has produced near-certainty among traders that he will secure the nomination. A late qualifying challenge or ballot dispute remains theoretically possible but appears remote given filing deadlines and current candidate lists.