San Francisco architect Lee Hammack says he and his wife, JoEllen Brothers, are “cradle Democrats.” They have donated to the liberal group Organizing for America and worked the phone banks a year ago for President Obama’s re-election. Since 1995, Hammack and Brothers have received their health coverage from Kaiser Permanente, where Brothers worked until 2009 as a dietitian and diabetes educator. “We’ve both been in very good health all of our lives – exercise, don’t smoke, drink lightly, healthy weight, no health issues, and so on,” Hammack told me. The couple — Lee, 60, and JoEllen, 59 — have been...