In 1968, Saiki joined the Hawai`i Republican Party and ran successfully for a seat in the Hawai`i State House of Representatives. In 1974, she moved to the Hawai`i State Senate where she served her district until 1982. A vacancy was created by U.S. Rep. Cecil Heftel's untimely leave from Congress, and on September 20, 1986, a special election was held. Saiki lost the special election (to Democrat Neil Abercrombie) but won a separate election (over Democrat Mufi Hannemann) sending her to Congress where she served two consecutive terms. With her election in 1986, she became the first Republican elected to represent Hawaii in the House of Representatives since its statehood.Â«/ref> In 1988, she beat challenger Mary Bitterman, a Democrat and former head of Voice of America.