Oklahoma's electoral votes in U.S. presidential elections 1908-2020

Oklahoma has taken part in all 29 U.S. presidential elections since 1908, and has voted for the nationwide winner in twenty of these elections, which gives a success rate of 69 percent. Until the mid-1900s, Oklahoma was traditionally a blue state, voting for the Democratic Party's nominee in nine of the eleven elections contested between 1908 and 1948; however it has turned reliably red since 1952, with the only Democratic victory coming in Lyndon B. Johnson's 1964 landslide victory. The only major irregularity in Oklahoma's presidential election history came in 1960, where one faithless elector cast a vote for the Democratic Party's non-candidate Harry F. Byrd, rather than vote for a Republican (Richard Nixon), or a progressive Democrat (John F. Kennedy). Similarly to 2016, Donald Trump won the popular vote in the 2020 election comfortably, with a share of almost two thirds; in both these elections, this was more than double the number of votes won by either opponent.

As of 2020, no U.S. president or major party nominee has ever come from the Sooner State. Oklahoma has been allocated seven electoral votes since the 2004 election; it had peaked at eleven votes in the 1930s, before falling to eight votes between 1952 and 2000.