The first round of Democratic presidential debates, which were split with 10 candidates each on June 26 and 27, saw a heated exchange between former Vice President Joe Biden and Sen. Kamala Harris, a full run-down of Sen. Elizabeth Warren’s many policy plans, and inspired a litany of jokes and memes at the expense of spiritual advisor Marianne Williamson.

Before we settle in for Tuesday’s debates, brush up on the biggest developments in the 2020 Democratic race in the past month with our quiz:

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