Yes, that's how Hitler worked it. "You are victims of the immigrants/liberals/woke people/Marxists who are stealing your jobs and killing you!" Never mind that Germans were killing THEM - indeed, one of the planks Hitler campaigned on was that he would not seek the death penalty for Germans who murdered immigrants.
Trump is following the same path.
Oh, Harris absolutely can. She is not a rapist or a felon. No one in her administration is now in jail for crimes against the United States. That is objectively "sucking less."
Of course, that is only true in reality. In the MAGAverse where immigrants are eating all the cats and dogs, thousands of children are being forcibly converted to the opposite sex every day and Mexicans (not Trump) are raping American women - it all makes perfect sense.
But how to mislead the people on that scale? Both Hitler and Trump have what Hitler called "the Big Lie." Hitler postulated that ordinary people wouldn't believe that he "could have the impudence to distort the truth so infamously." And indeed many did not; many Germans honestly believed that Jews were poisoning the blood of Germany, and would lead to its collapse. Trump has his "they are eating the dogs! They are eating the cats!" - and indeed, his followers regularly state things like "come on! He wouldn't lie about something like THAT."
Goebbels put it this way: "If you tell a lie big enough and keep repeating it, people will eventually come to believe it. The lie can be maintained only for such time as the State can shield the people from the political, economic and/or military consequences of the lie. It thus becomes vitally important for the State to use all of its powers to repress dissent, for the truth is the mortal enemy of the lie, and thus by extension, the truth is the greatest enemy of the State."
But to get the Big Lie out there you need a media apparatus, to "shield the people from the political, economic and/or military consequences of the lie." Hitler had Hugenberg, a media mogul who owned several newspapers and movie houses. They published papers and made movies about Hitler, all glowing and positive. Hitler playing with children. Hitler hiking, enjoying the beauty of nature. Hitler fighting for the common man.
Trump, of course, has Rupert Murdoch and his media empire, who does the same thing for Trump. Trump working at a McDonald's just like ordinary Americans. Trump protecting Americans from MS13. Regular announcements how Trump won this debate or that poll.
Supporting Trump because he's doing as good a job as Hitler did is not, IMO, a wise course to take. Even if he does promise to deal with the evil, scheming, criminal Jews immigrants.