Democrats will likely attack Donald Trump’s credentials as a tribune of the little guy by focusing on ventures like Trump University. | Getty

The anti-Trump onslaught is coming. Perhaps within weeks. Just not necessarily from Republicans.

Almost as soon as Donald Trump is the presumptive GOP nominee — which may be as soon as March 15 — Democrats will surely cut their negative ads, and then have at it.

They will attack Trump’s credentials as a tribune of the little guy by focusing on a money-grubbing venture like Trump University, designed to extract as much cash as possible from people who thought they would learn something about real estate from the shell of a school (Trump has been defending himself from charges of fraud for years).