AFSCME is going to put "real money" behind independent expenditures for ads on Hillary's behalf in remaining Democratic primary states, a union official just confirmed to me.

On Friday I noted that one good gauge of Hillary's continuing support would be to see whether the big third-party groups backing her continue to put money into ads on her behalf -- or whether they suspend such efforts.

An AFSCME official tells me that the union's leadership remains committed to pouring more money into the remaining states.

"Our independent expenditure campaign is going forward, just as our member education efforts are going forward -- full steam ahead," said the official, who spoke on condition of anonymity.

"We are going to be knocking on doors and making phone calls and doing direct mail and contacting our members in Kentucky and Oregon and Puerto Rico," the official said.

As for ad spending, the official added: "The efforts will be similar to those made in states like Ohio and Pennsylvania. We're gonna spend real money." The official declined to say whether real numbers had been agreed upon.

To be sure, it's easy to imagine that these plans might fizzle as super-dels continue to flock to Obama. And it's also easy to imagine AFSCME talking tough in this manner in order to avoid offending the Hillary campaign.

Nonetheless, this is what they're saying now. Bears watching.