Biden paths to 270:

1. Just win Nevada.

Or

2. Flip Pennsylvania.

Or

3. Flip Georgia.

Or

4. Flip North Carolina.

Trump paths to 270:

1. Keep Pennsylvania, North Carolina, and Georgia and flip Arizona.

Or

2. Keep Pennsylvania, North Carolina, and Georgia and flip Nevada.

— Eugene Gu, MD (@eugenegu) November 5, 2020