ANALYSIS: Poll Shows Deep Hole for Donald Trump, With Room for More Digging

The poll also suggests that Trump’s campaign can further alienate voters.

— -- A new ABC News/Washington Post poll captured a candidate in apparent freefall.

The poll suggests that Trump’s divisive campaign could easily further alienate voters. He could fall quite a bit more, particularly as the nation looks more favorably on President Barack Obama, against whom Trump has cast himself.

But there are glimmers of opportunity for Trump, as reflected in concerns about Clinton’s candidacy and broader societal forces at play this year.

In the new poll Clinton led among all age groups. She was tied among male voters and was up 23 points among women.

Helping Trump, potentially, are Clinton’s well-known weaknesses as a candidate. Half those polled said they were anxious about the idea of her as president, and her handling of her emails when she was at the State Department continues to spur doubts.

That parallel hasn’t been lost on Trump. He used a fundraising email to call on his supporters to “re-declare our independence” in part by taking “back our country from the corrupt career politicians.”

While the climate might favor Trump, the forecast clearly doesn’t. Built into Trump’s campaign is a calculation that a strong majority of voters will want to reject the Obama years.

Trump may or may not make America great again, but he is making Obama look pretty good again. The new poll put Obama’s approval rating at 56 percent, its highest level since November 2009, when his presidency was less than a year old.