This report is based on research conducted under a Joint Statistical Agreement between the Zentrum fur Umfrageni Methoden und Analysen, ZUMAi Mannheim, Germany and the U. S. Bureau of the Census during the authors' tenure at ZUMA. Norbert Schvvarz is now with the Institute for Social Research, University of Michigan and Tracy Wellens with the Center for Survey Methods Research at the U.S. Census Bureau.