New Yorkers can rest easy, knowing that the state Senate’s three top Democrats are hard at work defending the integrity of the state Constitution.

That, at least, is the reason John Sampson, Pedro Espada and Malcolm Smith are giving for trying to kill Inspector General Joseph Fisch’s subpoena for documents relating to the scandal-plagued Aqueduct racino deal.

Like Gov. Paterson, Senate Democratic leaders pushed hard to award the potentially lucrative contract to Aqueduct Entertainment Group, despite clear indications that the politically juiced company wasn’t up to the task — and was linked to some pretty unsavory characters.

Two weeks ago, Paterson finally pulled the plug on AEG, which is now the subject of multiple investigations.

And one of those probing the odiferous deal is Fisch.

But Sampson & Co. filed a motion in Manhattan Supreme Court to quash his demand for their documents, saying he lacks legal jurisdisction.

“We need to get to the truth,” said Espada, “but, having said that, there are legitimate separation-of-power issues here.”

Oh, right. High principle.

We all know how rigorous Sampson, Espada and Smith have been never to stray beyond strict constitutional boundaries.

After all, we’re not exactly dealing with Hamilton, Jefferson and Madison here.

Sampson contends that Assembly Speaker Sheldon Silver’s letter asking Fisch to investigate the AEG contract asks him only to “look at the Division of Lottery. Nothing with respect to legislators, either the Senate or the Assembly.”

Actually, Silver’s letter asks Fisch to look into whether Lottery “and other relevant state agencies” followed the law in handing the contract to AEG.

Which no doubt is why the Assembly has already complied with its own subpoena and turned over all requested documents to the IG.

Last Wednesday, Sampson volunteered to release the Senate’s documents, insisting that “we have nothing to hide.”

But not so fast. He said he would “make that decision with respect to counsel” — meaning that his lawyers will decide which documents get released publicly.

And one of those lawyers frankly admits that he’s not about to make public everything Fisch has subpoenaed — especially e-mails and internal memoranda.

That’s what John Sampson means by “transparency” — you can see right through him.