SAN FRANCISCO -- President Barack Obama could be on the verge of urging members of his party to put their differences aside and unite behind Hillary Clinton.
The White House suggests the president could weigh in after votes are cast in the last major batch of primaries Tuesday, at which point Clinton will essentially have clinched the nomination.
"(Obama) wants to give those voters an opportunity to make their voice heard before he weighs in," said spokesman Josh Earnest. "We'll wait another 48 hours here and see how this plays out."
An endorsement of Clinton now would offer a touch of historical symmetry. Eight years ago this week, he received an endorsement from his then-rival, Clinton; she suspended her campaign and urged supporters to back the young senator vying to become the first African-American president.
Clinton now seems mathematically assured to clinch her own place in history -- as the first female nominee of a major American political party, which she could do with even a mediocre result in six states Tuesday.
Her skeptics are now wrestling with a dilemma.
Many Bernie Sanders supporters sound ambivalent about what comes next. As the senator's social-democratic Cinderella story approaches its political midnight, his fans seem torn.
Most tell pollsters they'd rally behind her; one-quarter say they wouldn't; yet in interviews, many reveal they're grappling with a quandary.
Greg Elsten is an artist and he uses graphic images to illustrate his quandary. In cringe-inducing corporal terms, he describes his feelings about being forced to choose between Clinton and Trump.
"It's either a slap in the face or the kick in the crotch," he says. The silver lining here for Clinton? Elsten views her as the lesser of the two: "She would be the slap in the face."
If absolutely forced to, he says he'd be willing to endure the facial sting of voting for someone he finds as cynical and shifty as Clinton. Maybe if he lived in a swing state like Ohio, and believed his vote necessary to shield America from a kick in the unmentionables in the form of President Donald Trump.
But he lives in solidly Democratic California. So he figures he can afford to write Sanders' name into the ballot in protest -- like he's decorated the Uber car he drives with a Sanders sticker and button, and filled the back seat with pamphlets for passengers to read during their rides.
Sanders has already indicated he plans to keep fighting.
Clinton will still need some superdelegate votes at the convention, unless she outperforms expectations Tuesday. The Vermont senator suggests he might seek to convince those party officials to back him at next month's convention -- even though she's won more votes, more states, and more delegates.
Sanders supporters say something else might change between now and the July convention. Something like criminal charges being laid against their opponent.
The FBI is still investigating Clinton's use of a home email server for work. Some are apparently holding out for police intervention: "We're yet to hear the last of that, I hope," said Kate Tanaka at a Sanders rally last week in Oakland.
Tanaka hasn't voted Democrat in a quarter-century, not since Bill Clinton. She's more recently supported either Ralph Nader or the Green party. Like actress-activist Susan Sarandon, she's in the so-called "Bernie-Or-Bust" camp.
She wouldn't vote for Clinton.
"Never, never," Tanaka said. "I will go back to what I was doing before Bernie came along. I'd vote for (the Green party)... I don't want Donald Trump, but I don't want Hillary Clinton. I think she poses some really serious threats (too)," she said, referring to her hawkish military positions.
Others sound ready to hop aboard the Clinton bandwagon.
"As much as she's not the person in the primary that I voted for, I have no problem voting for her as the party candidate," said Timothy Egan of New Hampshire.
"I think a lot of (Sanders fans) will support her. Because the alternative is don't vote, or vote for Donald Trump. And I think they're too passionate to not vote, and they're too intelligent to vote for Donald Trump."
He predicted Sanders would ultimately back her too, because that's the best way to retain some political influence and keep pushing the causes he cares about.
At a Sanders rally in California, Yelda Bartlett was unequivocal when asked whether she'd be able to switch to Clinton: "Definitely," she said.
"I'm an immigrant. I'm Muslim. My family's Muslim. I can't vote for a demagogue (like Trump). It's scary to me."
