Former Vice President Kamala Harris, the 2024 Democratic nominee, is scheduled to headline a fund-raiser for the Democratic National Committee next month as she accelerates her re-engagement with the political world after her defeat last fall.

The event is scheduled for May 6 in New York, according to an invitation reviewed by The New York Times.

It is billed as a discussion between Ms. Harris and Ken Martin, the chairman of the D.N.C. Tickets start at $25,000, a level of access called “building the opposition.” The $44,300 level is called “fighting for the future,” according to the invitation.

The event comes as Ms. Harris slowly begins to wade back into the political arena, five months after President Trump prevailed in their truncated general-election matchup.

Ms. Harris has been weighing her next moves, which could include a return to the campaign trail, whether as a presidential candidate in 2028 or as a candidate for governor in her home state of California next year.

Some of her closest allies believe she is leaning toward the California run, while Ms. Harris has told people that she can run for governor or president, but not both. Indeed, the 2028 presidential campaign will effectively begin the day after the 2026 midterm elections end, if not sooner.

For now, though, Ms. Harris has been far less visible than some other Democrats, who have blanketed podcasts and town-hall events in red-leaning states in their efforts to push back against Mr. Trump. That list includes her former running mate, Gov. Tim Walz of Minnesota.

Others are also ramping up their appearances at the party’s events. Gov. JB Pritzker of Illinois, for instance, is scheduled to headline a major New Hampshire Democratic Party event in Manchester this month.