Ten Democratic presidential candidates will face off in Miami tonight.

Some of them, however, were tweeting about the debate and other key issues, including the Supreme Court, hours before they hit the stage.

Here’s what they had to say:

Former Vice President Joe Biden talked about the Supreme Court’s decisions today on gerrymandering and the 2020 Census citizenship question.

Michael Bennet said the Supreme Court has “given up on democracy.”

John Hickenlooper did an AMA on Reddit.

Andrew Yang tweeted about tonight’s debate, saying he expects to get about five to 10 minutes of airtime.

California Rep. Eric Swalwell prepped for the debate.

Bernie Sanders announced he was on Twitch, and shared a video on the immigration crisis.

Marianne Williamson invited everyone to share their “big truth.”

New York Sen. Kirsten Gillibrand wants you to text her if you need a refresher on her platform.