A new ABC News/Washington Post opinion poll has some very bad news for former Vice President Joe Biden. If he secures the Democratic presidential nomination — which he will, of course — a full 15 percent of Bernie Sanders supporters plan to cast their vote for President Donald Trump’s reelection. That’s extremely troubling for Biden, because in 2016, only 12% of Bernie’s supporters broke for Trump after their guy’s historic intraparty fight with Hillary Clinton.

But, USA Today reports, there’s some good news in there. You see, the 15% of Bernie-istas who plan to vote for Trump in that scenario represent “just 6% of Democrats and voters who lean Democratic.” Meanwhile, “Trump won 8% of Democrats in 2016.”

Huh? Wait a minute. How about Democrat or Democrat-leaning voters who supported other candidates in the primaries… or who may not have supported any of them? Isn’t it likely that these Democrat runaways will add some percentage points to the stat cited above?

You’d think so. And matters may get even worse for Biden considering the fact that Trump’s approval rating is on the rise. That too will convince at least some traditional Democrat voters to go with Trump this time around.

Oh yes, this could get much, much worse for Biden than USA Today anticipates.

Follow me on Twitter.