2020 Connecticut Democratic presidential primary

The 2020 Connecticut Democratic presidential primary took place on August 11, 2020, as part of the Democratic Party primaries for the 2020 presidential election. It was originally to take place on April 28, 2020 as one of several northeastern states in the "Acela primary", but was rescheduled twice due to the COVID-19 pandemic. The state was the last one to hold a Democratic presidential contest long before the penultimate contest more than a month prior and had been pushed to only one week before the rescheduled 2020 Democratic National Convention. The Connecticut primary was a closed primary, with the state awarding 75 delegates to the national convention, of which 60 were pledged delegates allocated on the basis of the primary results.

Former vice president and presumptive nominee Joe Biden won the last primary with around 85%, and senator Bernie Sanders, seeking to win delegates until the end of the primaries, received little more than 11%. While the late timeframe combined with the early virtual-polling period for delegates of the national convention, which started prior to the national convention and ended on August 15, shortened the state party's window to calculate and select its delegates to a normally unrealistic amount of less than four days, the clear result for Biden meant that he would most certainly win all of the 60 delegates, which remained correct following the final certified results of the primary election in late August.