The depressed Democratic base needs to ask itself some questions: Do women want more representatives who oppose abortion? Do Hispanics want to see immigration reform postponed? Do young voters want college loans slashed? If they don’t, they’ll set aside whatever valid grievances they may have with Obama and mobilize. If Democrats lose control anyway, maybe nothing too bad will happen. Obama will veto GOP bills, and politics will be paralyzed for two years as the parties jostle for 2012. But a right-wing Republican takeover of Congress and state capitals isn’t something to accept with indifference. Midterms matter, and voters tempted...