Selecting Electoral Voters

   The creators of the Constitution of the United States didn't give much guidance in the orirginal Constitution of how things should be done.  Because the Adams - Jefferson snafu and the fact that political parties started almost immediately the US Congress passed the XII amendment that spells it out a little more clearly.  I would advise you read it first.  It is too big and complicated for me to put it here.  You may end up searching on the meaning but be aware that the finest legal minds have some problems in this area.
  After that, give this search string (without the quotes) to your favorite search engine: "how the electoral college evolved".  My general purpose search engine for years has been DuckDuckGo.  It doesn't matter which search engine you use in one way.  You will be overwhelmed by the copious amount of information.  Be assured of one thing.  My intention here is not to give the input of any political party.  Learn it for yourself.  Read as many URLs as you can.  Be aware that some of your sources will be wrong in one way another.  A dead give away that they are wrong is if they say that the present winner take all way of doing things by sending all of the electoral college voters from the political party that had the highest popular vote is the way things have always been done they are dead wrong.  If they claim that present method is the only way then go some place else.
   Why should you go some place else if they say it has always been winner take all?  Because that is not the way it has always been done.  Alternative methods have been created and invariably all of them end up being contested with most going all the to the United States Supreme Court.  Some of them passed muster but many did not.  What is the criterion that the Supreme Court uses most of the time?  It is whether the method cheats and doesn't listen to the will of the people.  If it is an undemocratic method then invariably the Supreme Court justices will judge it to be unconstitutional.

   Although I have mentioned the number one method for choosing the electoral voters as being by State Party Convention I think I would be remiss if I let you believe that is the only it is done.  It isn't, although 33 states do it that way.  Here is that method and the other methods for doing it as of the year 2020:

Electoral Vote Map

Some of those methods of course are subject to faithless electors who change their vote from who they are pledged to vote.  The 2016 election was worst with seven electors who did not act in good faith and voted for somebody they were not pledged to vote for.  See the URL for how Maine and Nebraska cast their votes at 270towin for the footnote that gives this number of faithless voters.  Will this continue to happen in the future?  I don't know but it is a disturbing trend.  What if lots of these Electoral College voters were induced with money to change their votes?  If it was successful then the creators of the Consttitution would see the cabal they feated using a weakness in the Electoral College system way of voting the winner into power.