Elitism is arguing that working class white, Latino, and Asian voters are all voting for Hillary because of racism, and not because of the fact that Hillary's out there pushing specific policy solutions to address their specific needs.  Elitism is arguing that the Clinton economy was the same as the Bush economy, and that both require us to "change" from them.

Elitism is arguing that a temporary gas tax holiday, which is only passed if it comes from the coffers of Big Oil, is somehow not a "progressive" policy.

I think most Obama supporters are elitist, and I say that with full cognizance of the fact that the GOP has used this talking point against us.  But the fact is, it has worked.  You can either claim that it's because the working class has (again and again) been bamboozled, or you can recognize the grain of truth in it.

But I see it when I talk to my friends and colleagues, almost all of whom are Obama supporters, and they talk with contempt of Hillary white trash voters.  And assume that anyone with a college degree must be an Obama supporter.

The vast wealth schism between Hillary supporters and Obama supporters, on average (and excluding African American voters), indicates that the "elitism" divide did not start with any blog postings or candidate comments.  This has been a very real dynamic in this race, and while you can ignore it, that won't make it go away.