Democratic 2020 U.S. presidential candidate and former Vice President Joe Biden speaks at The Graduate Center of CUNY in the Manhattan borough of New York, on July 11, 2019. Photo by Carlo Allegri/Reuters Biden wins Oklahoma primary By — Associated Press Politics Mar 3, 2020 9:09 PM EDT Joe Biden has won Oklahoma's Democratic presidential primary. The state has 37 delegates at stake. Vermont Sen. Bernie Sanders won Oklahoma's Democratic primary in 2016 against Hillary Clinton. WATCH LIVE: PBS NewsHour's Super Tuesday special coverage MORE: Super Tuesday's full election results By — Associated Press Support PBS News Hour Your tax-deductible donation ensures our vital reporting continues to thrive. Give Now