Clinton, Iowa -- Friday, Sept. 29, 2017
From left, lumber barons Ernest Heinrich Struve, Chancy Lamb, David Joyce and William Young live on in animatronic form at the Sawmill Museum in Clinton. Clinton owes its affluent past to the Mississippi River, which brought lumber to the town's saw mills.
A transformation to a knowledge-based economy has not taken root here in Clinton, Iowa along the Mississippi River. But there has been a profound structural change of another sort: white working class voters switched from Democrat to solidly Republican in the last presidential election, upending decades of political predictability.
CREDIT: Alyssa Schukar for The New York Times