WASHINGTON (CNN) - New York City Mayor Michael Bloomberg, who has introduced Sens. Barack Obama and John McCain at recent events and who talks to Hillary Clinton often, is unlikely to make an announcement of support for any of them anytime soon.
"I don't have any plans to endorse anybody in the near future or to make up my own mind," Bloomberg told CNN in an interview.
"As you know I have very strong views of what I think is appropriate behavior for a candidate, what I want to hear out of the three candidates," he said. "And then someday I will decide, and whether or not I am going to tell other people who I am going to vote for or not is something to be decided down the road."
Bloomberg was in Washington Monday for a summit with 45 mayors from across the nation to try to make sure the nation's gun laws are being enforced, especially those concerning background checks.
Bloomberg, who has waged a campaign against gun sellers in Virginia because of the number of weapons from there that end up in his city, is co-chairman of a group called Mayors Against Illegal Guns. That group plans to air a television ad beginning this week urging Congress to close a loophole by forcing buyers at gun shows to undergo a federal background check.
The ad, which will air in Pennsylvania, New York, Arizona, Maryland and Florida, features clips from all three major presidential candidates.
"I'll be on your side for closing the gun show loophole," Clinton says.
"Crack down on them. Close the gun show loopholes," Obama says.
And McCain adds, "Convicted criminals have been able to buy and sell thousands of guns at gun shows because of a loophole in the law. Close the loophole."