The Albany Project reports that a coalition of unions, under the auspices of America United for Change, have announced that they will sponsor a targeted ad campaign. Though the details of the ad buy are not clear, it appears that the Service Employees International Union (SEIU) and the American Federation of State, County and Municipal Employees (AFSCME) will both sponsor targeted ads in the 29th.
I've included a sample ad after the break, though this is a generic ad and it's not clear what, exactly, will air in local media markets.