And in Iowa only 171,517 Iowans participated in the 2016 Democratic caucuses. This was only 5.4 percent of the 3.1 million people in the state. You could assume that the number would grow somewhat in 2020, but the field would also be much more crowded. So my projection was that if I got approximately 40,000 Iowans on board I could win. (Indeed, Bernie Sanders wound up getting the most votes, with 45,652, so my working assumption was pretty close.)