“I can’t support him,” said Richard Dorsch, a 53-year-old paramedic fire chief from Chicago’s Edison Park. Dorsch, who said his kids liken him to Archie Bunker, voted for Clinton in the primary, though he plans to support Republican Senator John McCain of Arizona if Obama wins the nomination.

“When he talks to you, it’s like he’s talking down to you,” Dorsch said. “He doesn’t have the experience to talk like that.

—Richard Dorsch, a 53-year-old paramedic fire chief from Chicago’s Edison Park. Dorsch’s 41st Ward, which gave Clinton, 60, a six- percentage-point advantage, is 90 percent white, dominated by German, Polish and Irish ethnic police officers, teachers and city workers.