Hillary Clinton trounced Donald Trump in a New Hampshire poll from WBUR/MassINC released Thursday, leading him by 15 points, 47-32, among likely voters.

Clinton’s lead over Trump expanded by 13 points since a May WBUR/MassINC poll when she led the Republican nominee by just two points, 44-42.

Clinton’s unfavorable rating dropped 13 points since May in the WBUR poll, from 58 percent to 45 percent. Trump’s unfavorable rating ticked up slightly from 58 percent to 60 percent since May.

MassINC surveyed 609 likely New Hampshire voters via phone July 29-Aug. 1 with a margin of error plus or minus 4 percentage points.