On the 2004 campaign trail (with her husband's running mate Sen. John Kerry and his wife Teresa Heinz), Elizabeth is dubbed their "secret weapon," prompting one of Dick Cheney's top aides, Mary Matalin, to praise: "She's smart and very aggressive for her partner." While stumping, Edwards discovers a lump in her breast, and on the day Kerry concedes to George Bush, she is diagnosed with invasive ductal cancer. "From the minute this happened, not a whimper," John Edwards says of his wife. "It's all strength. I don't know anybody else who could do that. It's just amazing."