ROCKWELL CITY - Calhoun County Democrats are sponsoring an open house and fundraiser for Christie Vilsack, the Democratic candidate for U.S. Representative in the new 4th District of Iowa. The open house is scheduled for 2 to 4 p.m. Sunday at the home of Lilybell Gray, 830 Court St., Rockwell City. Vilsack will meet attendees and discuss issues. The public is invited. She will be facing U.S. Rep. Steve King, R-Kiron.