No one in the White House is celebrating over the latest polls. President Obama’s job approval rating has dipped below 50 percent in a flurry of recent surveys. Rasmussen has him at 46 percent; Quinnipiac at 45; in Gallup he’s clinging to 50. The Allstate/National Journal Heartland Monitor Poll released Thursday had some heart-stopping numbers for Democrats: The president’s job approval was at 47 percent, down from 61 percent in April. Only 26 percent of respondents said they strongly approved of the president’s performance, compared to 38 percent in April. Just 39 percent said they would probably vote to reelect...