NEW YORK - Democrat presidential contender John Edwards spends his days shaking hands, giving speeches and persuading wealthy donors to write hefty checks. On Wednesday, Edwards is slated to get a taste of how the other half works as he toils on the early shift at the Sarah Neuman Nursing Home in Mamaroneck, a northern suburb of New York, waking patients, serving breakfast and living _ for a few hours, anyway _ the life of a $14-per-hour health care aide. Edwards' visit is part of the "Walk a Day in My Shoes" campaign organized by the politically influential Service Employees...