The new Washington Post/ABC News poll — which shows Hillary Clinton leading Donald Trump by 50-42 among registered voters nationally — also provides more evidence of one of the most important subplots of Campaign 2016: The ways in which Trumpism is forcing a deep cultural split between college educated white voters and the non-college whites who overwhelmingly back Trump.

The poll finds that Trump continues to hold a lopsided lead among non-college whites, 58-33. But Clinton leads Trump by 50-44 among college-educated whites, which is putting her on track to become the first Democratic nominee to win among those voters in half a century.

But the poll also finds, crucially, that this split extends to one of the key pillars of Trumpism: His proposed temporary ban on non-citizen Muslims from entering the United States. Overall, American voters lean against the ban on Muslims by 53-40. Simultaneously, voters slightly favor Clinton as the candidate who will do more to keep America safer and more secure, by 48-45.

But according to the crosstabs — which were provided by the Post polling team — the split on these questions among white voters is very pronounced indeed.

The ban on Muslims is supported by non-college white voters (53-40); non-college white men (57-39); and white evangelical protestants (62-31). By contrast, college educated whites oppose the ban on Muslims by 64-34.

Meanwhile, the same split is evident on the question of who will keep the country safe. Non-college whites pick Trump by 59-33; non-college white men pick Trump by 67-28; and white evangelicals pick Trump by 73-17. By contrast, college educated whites pick Clinton by 50-46.

Interestingly, Trump’s attacks on the Khan family appear to have gone too far even for his core supporters. American voters overall disapprove of his handling of the exchange with the Khans by 74-13, and Trump-leaning groups agree: Non-college whites disapprove by 67-14; non-college white men disapprove by 64-19; and white evangelicals disapprove by 63-20. (By the way, Republicans and GOP-leaners disapprove by 58-23, and conservatives disapprove by 62-18.)

The overwhelming public disapproval of Trump’s battle with the Khan family is encouraging to see. It’s looking increasingly like Trump, by engaging the Khans, helpfully reinforced many of the messages coming out of the Democratic convention about Trump’s demagogic scapegoating by religion and his overall hostility towards diversifying America. If the Dem convention brought a sledgehammer down on Trump’s worldview, he basically picked up that sledgehammer and continued to hit himself over the head with it — especially in the eyes of the college educated white voters who appear increasingly repulsed by Trumpism.

And yet, even after the battle over the Khans forced a national debate over Trump’s fearmongering about Muslims, his core voting groups are still sticking by the temporary ban on their entry into the United States — which, after all, is a core tenet of the story he’s telling about America.