query: Which US state first outlawed capital punishment?
passage: Capital punishment in the United States
Other states which abolished the death penalty for murder before Gregg v. Georgia include: Minnesota in 1911, Vermont in 1964, Iowa and West Virginia in 1965 and North Dakota in 1973. Hawaii abolished the death penalty in 1948 and Alaska in 1957, both before their statehood. Puerto Rico repealed it in 1929 and the District of Columbia in 1981. Arizona and Oregon abolished the death penalty by popular vote in 1916 and 1964 respectively, but both reinstated it, again by popular vote, some years later; Arizona reinstated the death penalty in 1918 and Oregon in 1978.[10] Puerto Rico and Michigan are the only two U.S. jurisdictions to have explicitly prohibited capital punishment in their constitutions: in 1952 and 1964, respectively.
passage: Capital punishment in Oregon
Oregon voters amended the Constitution in 1914, to repeal the death penalty, by a margin of 50.04%. The repeal was an initiative of Governor Oswald West. However, the death penalty was restored in 1920 with 56% of voters favoring its use. From 1864 to 1931, executions were carried out by hanging. However, beginning with the execution of LeRoy Hershel McCarthy, on January 30, 1939, Oregon began using lethal gas in gas-chamber executions. The state executed seventeen men in this manner. The last of these gas-inhalation executions took place on 20 August 1962, with the execution of Leeroy Sanford McGahuey.
In 1964 voters passed Measure 1, a constitutional amendment prohibiting capital punishment, with 60% of voters approving. Governor Mark Hatfield commuted the sentences of three death row inmates two days later.