NEW YORK — President Barack Obama and Republican challenger Mitt Romney poked gentle but sharp fun at one another Thursday night during an esteemed New York Catholic charity dinner that has long been a required stop for presidential candidates. Romney mocked his own wealth while taking aim at the president for running up the federal debt while Obama noted the “nice long nap” he had taken during the first presidential debate.

The two rivals donned tuxedos and white ties to share the dais at the Alfred E. Smith Memorial Foundation Dinner, an annual gala that has drawn political leaders and other notables since the end of World War II.

The event was a comedic pause in a contest that has drawn increasingly nasty and close with less than three weeks left before the Nov. 6 election. On Tuesday, Obama and Romney sparred in a nationally televised debate in which each questioned the other’s character and truthfulness.

Romney spoke first at the dinner, which was set to raise $5 million for Catholic charities. Addressing the elegantly dressed crowd, Romney, a millionaire many times over, said “it’s nice to finally relax and wear what Ann and I wear around the house.” Of Obama, Romney said: “You have to wonder what he’s thinking. So little time, so much to redistribute.”

Obama followed, noting his soporific performance in the first debate but also chiding Romney for his wealth.

“Earlier today I went shopping at some stores in Midtown,” Obama said. “I understand Gov. Romney went shopping for some stores in Midtown.”

Obama noted that he was preparing for the final debate with Romney on Monday, which will focus on foreign policy.

“Spoiler alert: We got bin Laden,” Obama said, referring to the military mission that killed the mastermind of the Sept. 11, 2001, terror attacks.

In a television interview earlier Thursday, Obama rejected criticism that his administration has offered a confused response to the attack on the U.S. Consulate in Libya, an accusation Romney has made repeatedly in the campaign for the White House. Of any breakdown that might have led to the killing of four Americans, Obama declared, “We’re going to fix it.”

Obama made the comments on “The Daily Show” on Comedy Central. Host Jon Stewart turned serious in pressing Obama over the government’s changing explanation about the attacks in Benghazi. When Stewart suggested that even Obama would concede his administration’s coordination and communication had not been “optimal,” Obama said: “If four Americans get killed, it’s not optimal. We’re going to fix it. All of it.”