The electoral college can vote not in alignment to their district's popular vote (in many states)
> There is no Constitutional provision or Federal law that requires electors to vote according to the results of the popular vote in their States. Some States, however, require electors to cast their votes according to the popular vote.
Not sure what you are trying to say? Some states used to elect electors not by popular vote, but by a vote by their legislatures. If we want to ensure the legitimacy of a vote it seems easier to secure a system where only a few are voting instead of everybody. I am not positive, but I think the votes in the legislatures were public so there would be no issues with potential voting machine manipulation or anything of the sort.
> There is no Constitutional provision or Federal law that requires electors to vote according to the results of the popular vote in their States. Some States, however, require electors to cast their votes according to the popular vote.
https://www.archives.gov/electoral-college/electors