Ted Koppel in The Washington Post:
It is all but inevitable that whoever succeeds Trump in the White House will be perceived by 30 to 40 percent of the voting public as illegitimate — and that the former president will enthusiastically encourage them in this perception. Whatever his failings, Trump is a brilliant self-promoter and provocateur. He showed no embarrassment, either as candidate or president, about using his high visibility to benefit his business interests. Untethered from any political responsibility whatsoever, he can be expected to capitalize fully on his new status as political martyr and leader of a new “resistance” that will make today’s look supine.