Please answer the following question: What type of details about robert ridder -lrb- politician -rrb-  can be gathered from the following bio?  Bio: robert c. ridder -lrb- born february 25 , 1927 -rrb- is an american former politician in the state of washington . ridder served in the washington state senate as a democrat from the 35th district from 1966 to 1973 . he attended the university of washington and earned a bachelor of science degree , and completed graduate studies . he was later an educator , serving as a vice principal of a junior high school . he retired from his senate seat in 1973 and was succeeded by his wife , ruthe .
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