Question: When did the state where Coles Creek is located reinstate the death penalty?

Knowledge 1: Coles Creek (Pennsylvania)
Coles Creek (also known as Cole's Creek) is a tributary of Fishing Creek, in Columbia County, Pennsylvania and Sullivan County, Pennsylvania, in the United States. It is long and is the first named tributary of Fishing Creek downstream of where East Branch Fishing Creek and West Branch Fishing Creek meet to form Fishing Creek. The creek is on the edge of Columbia County and parts of its watershed are in Luzerne County. [SEP] Knowledge 2: Socialist Party of Oregon (Columbia County, Oregon)
The Socialist Party of Oregon in Columbia County, Oregon began around the First Red Scare. The first year (1914) it went mainstream, the Socialist party had 27 more registered members than the Prohibition Party, who were some members of the Suffrage movement. The Socialist party was similar to the Progressive Party in the county, as it tried from the outskirts of government to make change. While Socialism failed its first year, it still received attention from the press who was aware of the October Revolution (1918) in Russia (Now the Soviet Union) by a similarly named government led by Vladimir Lenin. [SEP] Knowledge 3: Capital punishment in the United States
Other states with long histories of no death penalty include Wisconsin (the only state with only one execution), Rhode Island (although later reintroduced, it was unused and abolished again), Maine, North Dakota, Minnesota, West Virginia, Iowa, and Vermont. The District of Columbia has also abolished the death penalty; it was last used in 1957. Oregon abolished the death penalty through an overwhelming majority in a 1964 public referendum but reinstated it in a 1984 joint death penalty/life imprisonment referendum by an even higher margin after a similar 1978 referendum succeeded but was not implemented due to judicial rulings.
Knowledge 1: Coles Creek (Pennsylvania)
Coles Creek (also known as Cole's Creek) is a tributary of Fishing Creek, in Columbia County, Pennsylvania and Sullivan County, Pennsylvania, in the United States. It is long and is the first named tributary of Fishing Creek downstream of where East Branch Fishing Creek and West Branch Fishing Creek meet to form Fishing Creek. The creek is on the edge of Columbia County and parts of its watershed are in Luzerne County. [SEP] Knowledge 2: Capital punishment in the United States
Other states with long histories of no death penalty include Wisconsin (the only state with only one execution), Rhode Island (although later reintroduced, it was unused and abolished again), Maine, North Dakota, Minnesota, West Virginia, Iowa, and Vermont. The District of Columbia has also abolished the death penalty; it was last used in 1957. Oregon abolished the death penalty through an overwhelming majority in a 1964 public referendum but reinstated it in a 1984 joint death penalty/life imprisonment referendum by an even higher margin after a similar 1978 referendum succeeded but was not implemented due to judicial rulings. [SEP] Knowledge 3: Australia
Each state and major mainland territory has its own parliament — unicameral in the Northern Territory, the ACT and Queensland, and bicameral in the other states. The states are sovereign entities, although subject to certain powers of the Commonwealth as defined by the Constitution. The lower houses are known as the Legislative Assembly (the House of Assembly in South Australia and Tasmania); the upper houses are known as the Legislative Council. The head of the government in each state is the Premier and in each territory the Chief Minister. The Queen is represented in each state by a governor; and in the Northern Territory, the Administrator. In the Commonwealth, the Queen's representative is the Governor-General.The Commonwealth Parliament also directly administers the following external territories: Ashmore and Cartier Islands; Australian Antarctic Territory; Christmas Island; Cocos (Keeling) Islands; Coral Sea Islands; Heard Island and McDonald Islands; and Jervis Bay Territory, a naval base and sea port for the national capital in land that was formerly part of New South Wales. The external territory of Norfolk Island previously exercised considerable autonomy under the Norfolk Island Act 1979 through its own legislative assembly and an Administrator to represent the Queen. In 2015, the Commonwealth Parliament abolished self-government, integrating Norfolk Island into the Australian tax and welfare systems and replacing its legislative assembly with a council. Macquarie Island is administered by Tasmania, and Lord Howe Island by New South Wales.
Knowledge 1: Coles Creek (Pennsylvania)
Coles Creek (also known as Cole's Creek) is a tributary of Fishing Creek, in Columbia County, Pennsylvania and Sullivan County, Pennsylvania, in the United States. It is long and is the first named tributary of Fishing Creek downstream of where East Branch Fishing Creek and West Branch Fishing Creek meet to form Fishing Creek. The creek is on the edge of Columbia County and parts of its watershed are in Luzerne County. [SEP] Knowledge 2: Socialist Party of Oregon (Columbia County, Oregon)
The Socialist Party of Oregon in Columbia County, Oregon began around the First Red Scare. The first year (1914) it went mainstream, the Socialist party had 27 more registered members than the Prohibition Party, who were some members of the Suffrage movement. The Socialist party was similar to the Progressive Party in the county, as it tried from the outskirts of government to make change. While Socialism failed its first year, it still received attention from the press who was aware of the October Revolution (1918) in Russia (Now the Soviet Union) by a similarly named government led by Vladimir Lenin. [SEP] Knowledge 3: Australia
Each state and major mainland territory has its own parliament — unicameral in the Northern Territory, the ACT and Queensland, and bicameral in the other states. The states are sovereign entities, although subject to certain powers of the Commonwealth as defined by the Constitution. The lower houses are known as the Legislative Assembly (the House of Assembly in South Australia and Tasmania); the upper houses are known as the Legislative Council. The head of the government in each state is the Premier and in each territory the Chief Minister. The Queen is represented in each state by a governor; and in the Northern Territory, the Administrator. In the Commonwealth, the Queen's representative is the Governor-General.The Commonwealth Parliament also directly administers the following external territories: Ashmore and Cartier Islands; Australian Antarctic Territory; Christmas Island; Cocos (Keeling) Islands; Coral Sea Islands; Heard Island and McDonald Islands; and Jervis Bay Territory, a naval base and sea port for the national capital in land that was formerly part of New South Wales. The external territory of Norfolk Island previously exercised considerable autonomy under the Norfolk Island Act 1979 through its own legislative assembly and an Administrator to represent the Queen. In 2015, the Commonwealth Parliament abolished self-government, integrating Norfolk Island into the Australian tax and welfare systems and replacing its legislative assembly with a council. Macquarie Island is administered by Tasmania, and Lord Howe Island by New South Wales.

Answer: 1984