Joyce Nolin, a retired teacher, former day care operator and home care nursing assistant from Evans in Columbia County, often talks about education and health care in her bid as a Democrat for U.S. House of Representatives in Georgia’s 12th District. Nolin is one of two Democrats for the seat named on their party’s ballot in the May 24 primaries, for which advanced voting opened Monday. But the other Democrat, Patricia C. McCracken, has been hard to find.