Union leaders want to know how Emanuel collected their names and addresses to mail the letter, which talked about the mayoral candidate's opinion on Chicago's pension crisis. Was the information leaked within the city by someone close to Emanuel?
A spokesman for Emanuel said the letter wasn't only meant for city workers and that it was sent to homes all over Chicago. It's an "open letter to residents across the city,” Ben LaBolt said.
When asked about the letter, Mayor Richard Daley said Thursday, "I don't know anything about it."
City workers aren't buying it, saying the letter didn't look like a typical mayoral mailer, but instead an appeal to them individually.