Here’s quiz for the eve of this election — can you summarize in one sentence Hillary Clinton’s prime justification for being elected president Tuesday?

Me neither.

If pressed, many will say, “Trump is unfit for office and endangers America’s future.” Others will echo Barack Obama’s praise for his intended successor: “She’s the most experienced and office-ready candidate in our nation’s history.’’

“The other guy’s lousy and my résumé’s long” makes for just about the worst campaign button in history.

What does Clinton have to say on her own behalf? Yes, she would be the first female president, and that glass ceiling may be broken on Nov. 8. But then again, Carly Fiorina or Elizabeth Warren had a potential claim on that distinction.