COVID-19 Outbreak (Update: More than 2.9M cases and 132,313 deaths in US)

So i just saw on ‘breaking news’ that Pence has decided (or someone has decided for him) to self-quarantine for a couple weeks since his staffer tested positive.. My question is this, and I’m asking in pure non-political sense, becuase i have honestly forgotten some of the basics of how government works.. My question: If Pence and Trump both drop dead- who takes over as POTUS? I think it’s either McConnell or Pelosi, but not sure.. Depending on which of those it is, the reaction to Covid could obviously look very different.

Speaker of the house is next in line.