How many of the Democratic debates have you watched?
From left, Sen. Michael Bennet, D-Colo., Sen. Kirsten Gillibrand, D-N.Y., former Housing and Urban Development Secretary Julian Castro, Sen. Cory Booker, D-N.J., former Vice President Joe Biden, Sen. Kamala Harris, D-Calif., Andrew Yang, Rep. Tulsi Gabbard, D-Hawaii, Washington Gov. Jay Inslee and New York City Mayor Bill de Blasio are introduced before the second of two Democratic presidential primary debates hosted by CNN Wednesday, July 31, 2019, in the Fox Theatre in Detroit. (AP Photo/Carlos Osorio)