Some suspect that the Democratic National Committee, which has sponsored three Presidential debates in 2015, is out to render Hillary Clinton’s two remaining opponents—the former Maryland governor Martin O’Malley and the socialist New England senator Bernie Sanders—hors de combat. O’Malley and Sanders seem to think so. After all, the past two debates were scheduled on Saturday nights—including the Saturday before Christmas—and it was no surprise that they drew about a third as many viewers as the Republicans, who have had five debates. Clinton’s sparring partners have had fewer chances to embarrass her by bringing up her vote for the 2002 Iraq War resolution, or her interventionist impulses in Libya, or the e-mail controversy. But if that’s been the aim of Debbie Wasserman Schultz, the Democratic Party chairman, she’s done Clinton no favor. The Republicans, meanwhile, have become more practiced and assured with every outing.

