human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Poll source, Dates administered, Arlen Specter*, Pat Toomey, Tom Ridge*, Peg Luksik
###Question: Which Poll source has an Arlen Specter* of ––, and a Tom Ridge* of 60%?
gpt
SELECT Poll source FROM table WHERE Arlen Specter* = –– AND Tom Ridge* = 60%