Do empty promises lead to the White House? Do lies work when you have power? Of course they do.
If you want to unelect him, your first strategy would not be to sic the Justice Department and the rest of the security state on him. That will not work, especially not if a dried-up sex scandal and poorly laundered hush money underpin your case. If you cannot find leaders who have a better strategy than that, close up your shop.
Donald Trump is not responsible for crimes committed before he was elected president, but he sought leadership of the government that committed them. Do you want to follow him?