Oklahoma has a history of voting red. Here’s the last time it went blue

Oklahoma voted Republican for another election cycle and was one of two states where every county turned red in the Presidential election. 
This election feat of all counties going red is a continuing trend for Oklahoma. 
Here’s a quick history of Oklahoma in the Presidential election cycle. 
Though the votes have yet to be certified, and will be in the coming days, all Oklahoma counties went red with a vote for Donald Trump over Kamala Harris. 
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The state reported 1,035,217 votes for the president-elect — making 66.2% of the state’s vote — while Vice President Harris received 499,043 votes. 
Oklahoma has consistently been a Republican state since 1968 with Richard Nixon’s winning campaign for the 37th president. During this election, Oklahomans case 963,728 votes with 449,697 votes for the soon-to-be president. 
The last time before then that the state went blue was for Lyndon B Johnson’s winning campaign in 1964. In 1964, 55.75% of Oklahomans voted for Lyndon B. Johnson, a stark contrast to his vice-presidential run with President John F. Kennedy in 1960, where 59.02% of the state voted for Richard Nixon. 
The State Board of Elections website has county breakdowns for all presidential elections going back to 2000. Using this data, Oklahoma has been a wholly red state since 2004 election between George W. Bush and John Kerry.
In the 2000 election between Bush and Al Gore, only eight counties went blue in the election with Cherokee, Choctaw, Haskell, Hughes, McIntosh, Muskogee, Okmulgee and Ottawa counties.