The central part of Iowa is the state 's most Republicans area . Mississippi River is home to the most Democratic . Support of Linn County 's largest newspaper , GOP , highly sought . Weather may affect how many people turn out .
The central part of Iowa is the state 's most Democratic area . Western Iowa is home to the most Republicans . Support of Iowa 's largest newspaper , the Des Moines Register , highly sought . Weather may affect how many people turn out .