Two retired comedians will take the stage in New York later this month at a fundraiser to benefit Illinois Rep. Tammy Duckworth, the leading Democrat running to challenge GOP Sen. Mark Kirk next fall.

David Letterman, who retired this year after three decades hosting the “The Late Show” on CBS, and Sen. Al Franken, who gained fame as a writer and performer on NBC’s “Saturday Night Live,” will ­headline the event.

The fundraiser is described on an invitation as a night of “serious fun.” Duckworth’s host on Oct. 25 will be Alex Soros, the 29-year-old son of billionaire George Soros who launched his own political action committee, Bend The Arc PAC, earlier this year.

This will be the second time this year that Franken has helped Duckworth raise money. During a Democratic Senatorial Campaign Committee retreat on Martha’s Vineyard earlier this year, he organized a group of major donors.

Franken rarely shows off his comedic chops or talks about his SNL days in the Senate.

But last April, Franken made his first appearance on the “Late Show” since he first was elected in 2008. The Minnesota senator urged Letterman to run for the seat of GOP Sen. Dan Coats, who is retiring after the 2016 elections.

Duckworth — an Army combat veteran who was elected to the House in 2012 — has the advantage for her party’s nod. She is being challenged in the primary by Andrea Zopp, a Chicago lawyer who is the former president of the Chicago Urban League.

Tribune News Service