So how does he rank?

Bill Clinton was re-elected by 8.3 million votes

Obama was re-elected by 5.0 million votes

Even Dubya was re-elected by 3.0 million votes

Trump was crushed...losing re-election by 6.7 million votes. (and if the Krakenfools ever find that "submarine full of ballots" it may climb to a 16.7 million LOSS.)