Julián Castro just became the 10th candidate to qualify for the next Democratic debate

(Image credit: Stephen Maturen/Getty Images)

And then there were 10.

Former Housing and Urban Development Secretary Julián Castro on Tuesday became the 10th Democratic presidential candidate to qualify for the September Democratic primary debate in Houston. Castro had been close to qualifying for a while, after crossing the donor threshold and polling at 2 percent in three DNC-approved polls, but a new CNN poll, in which the former mayor of San Antonio hit 2 percent for the fourth time, put him over the line.

Castro joins fellow Texan former Rep. Beto O'Rourke (D-Texas), former Vice President Joe Biden, South Bend, Indiana, Mayor Pete Buttigieg, entrepreneur Andrew Yang, and Sens. Elizabeth Warren (D-Mass.), Bernie Sanders (I-Vt.), Kamala Harris (D-Calif.), Cory Booker (D-N.J.), and Amy Klobuchar (D-Minn.) on the stage in his home state.

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The qualification means that the debate scheduled for Sept. 12 is at capacity, as the DNC is still capping the number of candidates on one stage at 10. So, if any other candidates — such as billionaire Tom Steyer or Rep. Tulsi Gabbard (D-Hawaii) — pick up the 2-percent polling numbers they need within the next eight days, there will have to be a second night of debates on Sept. 13.

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Tim is a staff writer at The Week and has contributed to Bedford and Bowery and The New York Transatlantic. He is a graduate of Occidental College and NYU's journalism school. Tim enjoys writing about baseball, Europe, and extinct megafauna. He lives in New York City.