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County results Grassley: 50-60% 60-70% 70-80% 80–90% Roehrick: 40–50% | |||||||||||||||||
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Elections in Iowa |
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The 1986 United States Senate election in Iowa was held November 4, 1986. Incumbent Republican United States Senator Chuck Grassley won re-election to a second term, defeating Democratic nominee, attorney John P. Roehrick in a landslide. This would be the last time that Grassley lost a county until 2010 when Roxanne Conlin flipped Johnson County.