Trump's condition and the dishonesty of the WH regarding his sickness since the news dropped. So for days it's been nothing but Trump being at risk and sicker than he admits (even today that's the tune)

Then, there is a tiny aside today saying Biden's team is tight with info regarding his health.

From the article:
The approaches to transparency and accuracy that the two presidential candidates’ teams have taken on their health are not comparable. Mr. Biden, the former vice president, is running against an incumbent who has a long record of falsehoods, and whose White House has withheld critical information and offered misleading or suspect statements, including about the president’s health.