A rural Mississippi River county where margins have shifted sharply rightward over two decades
Louisa County sits along the Iowa–Illinois border and has moved from a perennial swing county in the early 2000s to one of Iowa's most lopsided presidential results, reflecting broader rural realignment across the state's agricultural flatlands.
Contextual statewide polling for Iowa. County pages stay rooted in county returns, but live statewide polling helps frame the current cycle.