New York City Mayor Michael Bloomberg damaged the recent push for gun control through his aggressive advocacy of the legislation, according to Senate Judiciary Chairman Patrick Leahy, D-Vt.

“It is not going to get through now,” Leahy said on Newsmakers when asked if Democrats would make another push on the issue. “Unfortunately, you have some on the left like the mayor of New York City who actually didnt help a bit with his ads — he actually turned off some people that we might have gotten for supporters — and you have some on the far right who say the Second Amendment allows us to have anything, as though you can take a machine gun to go deer hunting. There’s got to be a balance in between.”

Bloomberg launched a national ad campaign targeting red-state Democrats who face reelection in 2014, but the gun control bill failed as four Democrats voted with Republicans to stop it. Sen. Mark Pryor, D-Ark., even released an ad arguing that Bloomberg’s criticism proves he is a good representative of his constituents.

“The mayor of New York City is running ads against me, because I oppose President Obama’s gun-control legislation,” he said. “I’m Mark Pryor. And I approve this message because no one from New York or Washington tells me what to do. I listen to Arkansas.”

Sen. Chuck Schumer, D-N.Y., has also criticized Bloomerg’s efforts. “Frankly, I don’t think Bloomberg’s ads are effective,” Schumer told Time Magazine. “The Mayor of New York City putting ads against people in red states is not going to be effective.”