"Are you registered to vote?" Dave Tessitor asked a man as he walked past the library in Pittsburgh's Squirrel Hill neighborhood.
"Yes," the man said, not stopping.
Tessitor fell in step. "We're collecting signatures to put a referendum on the November ballot," he said, walking up the street with the man. He only turned back several blocks later, the cargo pocket of his shorts one pamphlet lighter. He shrugged and smiled. And then a young couple came out of the library. "Excuse me, are you registered to vote?"