Everyone who met him remembered his voice. Not loud, but cutting. It could slice through a crowded saloon and make the piano player lose his place. One editor said, “Grimes didn’t speak; he struck.” Another said, “He had the manner of a man who expected you to be wrong.”
In 1854, Iowa made him governor—a bad idea for anyone who preferred peace. Grimes was built for conflict. Slavery’s supporters tried to push their influence west, and he met them like a brick wall. “If slavery enters Iowa, it will come over my dead body,” he said, and people believed him. He didn’t smile when he said it. He didn’t smile much at all. A Davenport paper described him as “a man who looks permanently disappointed in human nature.”
He became one of the early architects of the Republican Party, back when it was more movement than machine. He didn’t care if he made enemies. “Let them shout,” he said. “I’ll shout louder.” When a rival called him radical, Grimes shrugged it off. “If freedom is radical, the Founders were radicals,” he said, and the line stuck because it sounded like something hammered into metal.

