Claim: Nancy Pelosi would become president Jan. 20 if the election were delayed.

When President Donald Trump tweeted July 30 about his qualms with mail-in voting and suggested that perhaps the 2020 general election should be delayed, citing a need to “properly, securely and safely vote,” there was a panicked response. VIDEO

Another video that clarifies it. 
https://www.youtube.com/watch?v=F7dkcBH0zNU