In a head-to-head matchup of each party’s frontrunner, Mrs. Clinton leads Mr. Trump by only 3 percentage points nationally (46 to 43; 11 percent undecided).That's worrisome -- but please note that the poll claims Clinton would beat Trump among Hispanics by only 17 points, 52%-35% (13% undecided). That would mean that Trump would do better among Hispanics than Mitt Romney did in 2012 (Barack Obama beat Romney 71%-27%). Show of hands: Who (outside of Trump Nation) seriously thinks this will happen? (The recent Latino Decisions poll put the Clinton-Trump margin at 76%-11%, which seems realistic given the 2012 numbers and Trump's rhetoric.)
Only 5% of Battleground Poll poll respondents were Hispanic; 77% were white and 12% black. That's a serious underrepresentation of Hispanics and overrepresentation of whites (Hispanics were 10.8% of the 2012 electorate, while whites were only 71.1%; the white portion of the electorate is expected to drop to 69% this year).
Also, the Harvard IOP Poll has Clinton beating Trump 61%-25% among 18-to-29-year-olds. The Battleground Poll has Clinton beating Trump by only 49%-42% margin among 18-to-34-year-olds. Yes, I know about the "Trump Bros" phenomenon, but the Harvard numbers seem a lot more plausible.
So sorry, I don't trust this Battleground Poll. Believe it if you choose.