In her strained and frail handwriting, Julia Gomez, 73, wrote "Please Do Not Disturb" on a torn piece of notebook paper and stapled it to a curtain in a broken window of her front door. The sign didn't stop vote-hungry campaign workers earlier this year from repeatedly pestering the ailing woman and her husband, Pedro. They arrived offering to help the two with their mail-in votes for the March primaries. Not the least interested in voting, Julia shooed several of them away. But they persisted. Finally, she signed some "papers" in haste, mostly so the campaign workers would leave. Weeks...