Well, a funny thing happened in Washington on Tuesday: The state held a mail-in, beauty-contest primary — so voting was easy, but no delegates were at stake. (The Associated Press has declared Hillary Clinton the winner.) The results are still being finalized, but Clinton leads by about 6 percentage points with more than 700,000 votes counted. Sanders won the Washington caucuses, which had 230,000 participants, by 46 percentage points.

So, turnout was much higher in the Washington primary than in the caucuses, and Clinton did much better. Something similar happened in Nebraska, where Clinton lost the early March caucuses by 14 percentage points and won the early May primary, in which no delegates were awarded, by 7 points.

Nebraska and Washington are part of a pattern. As Sanders fans claim that the Democratic primary system is rigged against their candidate and that Sanders wins when turnout is higher, they fail to point out that Sanders has benefited tremendously from low-turnout caucuses. Indeed, if all the caucuses were primaries, Clinton would be winning the Democratic nomination by an even wider margin than she is now.