Bruce Gyory: “Trump’s job approval rating is down to 31 percent among independents in Gallup. His approval ratings in Rasmussen are down from the 48-49 percent range of late last year to the 43-44 percent level of the past week or so. The Marist data for PBS shows a drop of 10 percent in job approval among Republicans and a decline of 11 percent among white evangelicals and 17% among suburban men.” “And Trump continues to enrage the Dem base while this erosion in his base continues to progress.