2. Have faithless electors in the Electoral College ever changed the outcome of a * presidential election in the United States?

No, faithless electors have never changed the final outcome of a presidential election.
There was a faithless elector in the 1800s and the vote changed the outcome of the presidential election.
Yes, faithless electors have changed the final outcome in at least one presidential election.
Yes, faithless electors have changed the final outcome in multiple presidential elections.

1 answer

No, faithless electors have never changed the final outcome of a presidential election in the United States. While there have been instances of electors casting votes contrary to their pledges, none of these occurrences have ever altered the final result of an election.