The American Federation of State, County and Municipal Employees (AFSCME), the National Education Association (NEA) and the Service Employees International Union (SEIU) will launch a series of radio and television ads on Tuesday that urges lawmakers to let the Bush tax rates for the wealthy expire while preserving entitlement benefits.

Mary Kusler, NEA’s director of government relations, said the ads will target House Republicans who appear open to raising tax revenue and Senate Democrats who have appeared willing to slash programs like Medicare and Social Security…

“We recognize that the most fiscally conservative Senate Democrats are going to be coming under intense pressure,” Kusler said. “We want to take this opportunity to buck them up and remind that they have been seen as leaders on middle-class issues and to keep working families, seniors and students front and center in their minds when they are doing their decisionmaking.”