Less than a week ago, Mayor de Blasio was offering aid to Ecuadorians after the earthquake there. Now a political earthquake is rocking City Hall and the mayor is the one who needs help.

The report from the state Board of Elections that accuses him and his team of “willful and flagrant” violations of campaign-finance laws immediately changes everything.

The veneer of business as usual is shredded. Never again can de Blasio wave off questions about the mushrooming investigations of his administration. As revelations pile up day after day, allies will desert him and the Putz will find himself a very lonely man.

There is no way to sugarcoat the facts: de Blasio is in trouble. Maybe very big trouble.

His City Hall is being depicted as the seat of a criminal enterprise. And so far, he offers nothing resembling a convincing ­denial.

As bad as it is, the election report covering the 2014 state Senate races is just the start. The endgame involves the more ­lethal issue of whether de Blasio sold government favors to donors. That is what federal prosecutors are looking for, and I believe they will find a mother lode.