Pauline Ruyle Moore, 64, a former chief clerk and counsel for the Senate Democratic Policy Committee and an energy consultant and attorney in Washington and Illinois, died Tuesday at Memorial Medical Center in Springfield, Ill. She had cancer.

Before joining the Senate's Democratic Policy Committee, Mrs. Moore was administrative secretary to the late Rep. James Martin Barnes (D-Ill.), from 1939 to 1942, and an administrator for the Democratic National Committee for two years.

In 1948, she joined the committee, the Democratic Party's official policy body in the Senate, serving under former president Lyndon B. Johnson, when he was the committee's chairman, and later under former senator Mike Mansfield (D-Mont.).

Following her retirement from the committee in 1970, Mrs. Moore joined her husband J. Cordell Moore, a former assistant secretary of the Interior in the Johnson administration, in the private practice of law. She and her husband specialized in energy.

Mrs. Moore was born in Fort Worth, Tex. She earned a bachelor's degree from McMurray College in Jacksonville, Ill., and a law degree from American University's law school. She also did postgraduate work in political science at George Washington University.

Beside her husband, survivors include a sister, Mrs. George Schmalz of Jacksonville, Ill.

The family suggests that expressions of sympathy be in the form of contributions to the American Cancer Society, or to the Heart Foundation.