The 2020 presidential election, already one of the most turbulent campaigns in modern American history, was thrown into even more uncertainty with the announcement late last week that President Trump had contracted the coronavirus.

The most pressing issue is, of course, the president’s health. But with less than a month left before Election Day, Trump’s diagnosis creates a long list of questions about how the remaining days of the race will play out.

Trump’s campaign announced it will hold events featuring Vice President Mike Pence while the president recovers. Trump sent out a flurry of election-focused messages on Twitter Monday morning after being mostly quiet for the previous few days. Joe Biden has continued campaigning after multiple negative tests. At the moment, the vice presidential debate between Mike Pence and Kamala Harris is scheduled to go forward on Wednesday. It’s unclear whether the final two presidential debates, which are scheduled for Oct. 15 and Oct. 22, will be held.