Battleground poll: Clinton leads Trump in Iowa and Pennsylvania, tied in Ohio

In Iowa, the presumptive Democratic nominee is ahead of Trump by three points among registered voters, 42 percent to 39 percent, which is within the poll’s margin of error of plus-minus 3.4 percentage points while a combined 18 percent say neither, other or undecided. (Back in January, Clinton held an eight-point advantage over Trump, 48 percent to 40 percent.)

In Pennsylvania, she leads the presumptive GOP nominee by nine points, 45 percent to 36 percent, with 19 percent saying neither or undecided. (In April, it was Clinton 54 percent, Trump 39 percent.)

But in Ohio, the two candidates are tied at 39 percent each, with 21 percent saying neither, other or undecided. (In March, Clinton held a six-point lead over Trump in the Buckeye State, 48 percent to 42 percent.)