How does this resolve if Kamala loses and Joe resigns (e.g. his health worsens further and he feels he cannot do it)?

If Joe resigns prior to Jan 20th, Kamala becomes President for those few months, even if she loses the election.

Gotcha, I had misread the question as sorta assuming Kamala would win. Thank you!

/jks/will-another-us-president-hold-offi