MEETING AND GREETING: Pa. State Auditor Robert P. Casey Jr., above, talks with Janet Lee, 5, during a tour of the Children's Village Child Care Center in Philadelphia. Casey was there Tuesday. As he prepares to take on former Philadelphia Mayor Edward G. Rendell for Democratic nomination for governor, Casey's biggest asset could be Rendell himself. A number of influential Democrats, mainly labor union leaders, political financiers and neighborhood leaders disappointed by Rendell during his eight years as mayor, have endorsed Casey. Below, Rendell, left, talks with Eric Marchbein on Marchbein's back porch in the Squirrel Hill section of Pittsburgh while meeting with Democratic workers in the 14th Ward. Rendell met with workers Tuesday.