The Democratic Party held a presidential primary debate on September 12, 2019, in Houston, Texas.It was the third of 12 Democratic primary debates scheduled for the 2020 presidential election.. Candidates had until August 28, 2019, to qualify by reaching a grassroots fundraising threshold of 130,000 unique contributors and a polling threshold of 2 percent support or more in four eligible polls.

https://ballotpedia.org/Democratic_presidential_primary_debate_(September_12,_2019)