Question: who is the incumbent with candidates being tom ridge (r) 80.9% joylyn blackwell (d) 19.1%
Schema: create table table_1341586_39 (incumbent varchar, candidates varchar, PRIMARY KEY (incumbent))
SQL: select incumbent from table_1341586_39 where candidates = "tom ridge (r) 80.9% joylyn blackwell (d) 19.1%"