Each state has "electors" for both sides, nothing at all stopping both sets going to DC.......but, in Navada, ( and in a few other state) the Democrats won and the election was certified, the GOP electors filled out documents indicating that they won the state and sent those electors and those documents to Congress as the winners of the state...that's fraud...and they now have corroborating evidence that Trump and his team coordinated all of this.......that is illegal.......the Dems have sent alternate electors also, but they were not dumb enough ( I know hard to believe) to sign the fraudulent documents and present them to Congress as the real thing