From The Hill:
New scenarios suggested in the Atlantic magazine raise the specter of a partisan fight between Republicans and Democrats over state legislatures appointing their own slate of presidential electors — taking advantage of holes in our porous Electoral College system for choosing a president. In that scenario, the Trump campaign might focus on swing states with Republican-led legislatures such as Arizona, Florida, Michigan, North Carolina, Pennsylvania and Wisconsin, using their legislative powers not only to undo the popular vote, but also to roll back whatever electoral votes Democratic presidential nominee Joe Biden might garner. This actually happened in the election of 1876, between Rutherford B. Hayes and Samuel Tilden. Three states – Florida, South Carolina and Louisiana – sent in competing slates of electors. The parties were said to have planned competing inaugurations.