George Murphy, 89, a Hollywood song-and-dance man who appeared in 55 films and became a U.S. senator from California, died Sunday of leukemia at his home in Palm Beach, Calif. His movies included "This is the Army," with Ronald Reagan and Irving Berlin. He began as a dancer in nightclubs, reached Broadway in 1927 with Julie Johnson, his partner and later wife, and established himself in movies by the mid-1930s. The former Democrat registered as a Republican in 1939 and became active in politics. He served two terms as president of the Screen Actors Guild. He retired from the screen in 1952 and worked as a motion picture business executive. He was elected to the Senate in 1964, defeating Pierre Salinger, the former press secretary for President John F. Kennedy. Senator Murphy lost his re-election bid in 1970.