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 Tom Ridge* has a Poll source of research 2000, and an Arlen Specter* of 43%?
gpt
SELECT Tom Ridge* FROM table WHERE Poll source = research 2000 AND Arlen Specter* = 43%