MARK PENN AND ANDREW STEIN: Back to the Center, Democrats.

In the early 1990s, the Democrats relied on identity politics, promoted equality of outcomes instead of equality of opportunity and looked to find a government solution for every problem. After years of leftward drift by the Democrats culminated in Republican control of the House under Speaker Newt Gingrich, President Bill Clinton moved the party back to the center in 1995 by supporting a balanced budget, welfare reform, a crime bill that called for providing 100,000 new police officers and a step-by-step approach to broadening health care. Mr. Clinton won a resounding re-election victory in 1996 and Democrats were back.

But the last few years of the Obama administration and the 2016 primary season once again created a rush to the left. Identity politics, class warfare and big government all made comebacks. Candidates inspired by Senator Bernie Sanders, Senator Elizabeth Warren and a host of well-funded groups have embraced sharply leftist ideas. But the results at the voting booth have been anything but positive: Democrats lost over 1,000 legislative seats across the country and control of both houses of Congress during the Obama years. And in special elections for Congress this year, they failed to take back any seats held by Republicans.

Central to the Democrats’ diminishment has been their loss of support among working-class voters, who feel abandoned by the party’s shift away from moderate positions on trade and immigration, from backing police and tough anti-crime measures, from trying to restore manufacturing jobs. They saw the party being mired too often in political correctness, transgender bathroom issues and policies offering more help to undocumented immigrants than to the heartland.

There currently doesn’t seem to be much inclination among the party faithful to move back towards the center, but a few more losses might help shake off the stupor. And if Democrats do pick back up the mantle of the DLC, that would be the final repudiation of Barack Obama’s legacy.