The New York Democrat is expected to make her debut in the leadoff caucus state of Iowa next weekend. Among her stops, Gillibrand plans to headline a Woodbury County Democrats Truman Club gathering at a private home in Sioux City on the evening of January 18. Although the event is expected to be an intimate gathering of only a couple dozen donors and influential activists, it will be hard to avoid the comparison of a recent event Sen. Elizabeth Warren of Massachusetts held in Sioux City, when she packed 400 into a refurbished downtown theater.