Chuck “The Enforcer” Schumer can cut another notch on his revolver.

New York’s senior senator has spent much of the past year clearing the potential Democratic primary field to make way for his protégé, Kirsten Gillibrand.

His latest victim: Harold Ford.

Ford, a former Tennessee congressman turned Wall Street financier, on Monday abandoned a possible run against Gillibrand thanks to heavy-handed political pressure.

Senate Majority Leader Harry Reid, recall, phoned Mayor Bloomberg, who’d been encouraging Ford to run. And Schumer met with Ford to read him the riot act — leading Ford to publicly denounce “bullying party bosses.”

Among their prior victims: Reps. Steve Israel and Carolyn Maloney (with Israel even getting an admonishing call from the White House).

Now Ford has also dropped out — in the name, he says, of party unity.

Yes, Ford had taken a real public bruising on everything from his taxes to his knowledge of New York to his position on same-sex marriage.

But Schumer & Co. weren’t about to take any chances — not with Gillibrand’s poll numbers so anemic. As Ford noted yesterday: “Voters don’t know the junior senator. They can’t name one positive outcome from her.”

That’s because she hasn’t produced any.

Which is why it’s so shameful that Schumer & Co. are shielding her from even the slightest voter scrutiny — all the while denying enrolled Democrats the right to choose their own nominee.

As Harold Ford asked — before he was cast aside: What are they so afraid of?

What, indeed.