Final pre-election Selzer & Company polls Election Democratic candidate Poll D % Actual D % Republican candidate Poll R % Actual R % Poll margin[a] Actual margin[b] Error Ref 1996 IA president Bill Clinton 46 50.3 Bob Dole 35 40.0 D+11 D+10.4 D+0.6 [20] 1996 IA U.S. Senate Tom Harkin 46 51.8 Jim Lightfoot 38 46.7 D+8 D+5.1 D+2.9 … Continue reading Pollster Ann Selzer was off by as much as 10.5% in prior elections