Democratic campaign operatives have been getting worried that the White House wasn’t doing enough to help them in the midterms, and that President Barack Obama didn’t care enough to change that. Friday, Obama provided the answer: David Simas, a longtime aide who returned to the White House after running polling and focus groups for the re-election campaign, was named director of a new Office of Political Strategy and Outreach. The re-establishment of an internal political operation marks a significant shift for the White House, and the latest step in a 2014 West Wing reorientation that’s aimed at quickly making up...