HARRISBURG — State Sen. Leanna Washington used her elected office for political and personal gain by ordering her taxpayer-paid employees to organize an elaborate, annual “birthday party” political fundraiser that drew hundreds of attendees, state prosecutors said Wednesday as they filed criminal charges against the Philadelphia Democrat.

For eight years in the Senate, Washington pressured her staff to devoting weeks, if not months, to organizing the event, drawing up guest lists that included city and state officials, creating invitations and ordering everything from ice sculptures to bubble machines, prosecutors said.

A 30-page grand jury presentment issued by Attorney General Kathleen Kane’s office said Washington “systematically took advantage of her elected office and ... stole the labor of Senate employees who were paid by the taxpayers to perform work for the constituents — and not a political campaign and not for a personal benefit of an elected official.”

The charges against Washington include one count each of theft of services and conflict of interest, both felonies. The attorney general’s office estimated the monetary loss to the state could range from $30,000 to more than $100,000.