<p>This survey was conducted by the Des Moines Register and Tribune Co. A sample of 603 adult residents of Iowa were interviewed January 21-24, 1976. Major topics covered: household finances; st
<p>This survey was conducted by the Des Moines Register and Tribune Co. A sampleof 1,003 adult residents of Iowa were interviewed January 7-9, 1980. Major topics covered: Democratic presidential
<p>This survey was conducted by the Des Moines Register. A sample of 402 Iowa Caucus attenders were interviewed January 16-20, 1988. Major topics covered: Democratic caucus and candidates; polit
