User:RRGGBB00FF

Just moving 9 Counties between states could have resulted in both Mitt Romney and Hillary Clinton winning the electoral college in 2012 and 2016, respectively:

Philadelphia, PA --> NJ

Mahoning, OH --> PA

Trumbull, OH --> PA

Lucas, OH --> MI

Lake, IL --> WI

Leon, FL --> GA

Baldwin, AL --> FL

Imperial, CA --> AZ

San Diego, CA --> AZ