A recent poll in Gwinnett County revealed that 63 percent of those questioned were in favor of expanding MARTA into the county, a figure that dropped to 50 percent when people were asked if they would pay a penny sales tax for it. Those results indicate Gwinnett may have turned the corner on transit. Not quite, writes County Commission Chairman Charlotte Nash, who says it’s not time for a MARTA referendum. A Gwinnett business leader, however, makes an economic case for transit. Also, a MARTA board member writes about economic benefits from transit in Clayton County.