What stood out most talking to voters?

Benjy: I was caught off guard by how specific and personal Democratic voters' issues tended to be. One woman told me she had lost a job because she had to take care of a sick relative and wanted paid family leave. Another woman told me her insurance stopped covering a certain medication that had grown too expensive and she liked how Clinton and Sanders talked about lowering drug prices. One man told me his wages were stagnant at his hotel job and he was looking for policies to increase them.

"We're talking about bread-and-butter issues," Phyllis Thede, an Iowa state representative backing Clinton, told me when I asked about her constituents' top concerns.

By contrast, Republican voters tend to be excited by more abstract issues: One of the most common answers I get from Cruz voters when I ask about their leading concern is "the Constitution." There are fewer "I have a specific problem in my own life, and I'd like the government to do x about it" responses.