Mitch Landrieu speaks after a tabletop exercise with Louisiana leaders to discuss plans for Hurricane Irma (via WWL-TV)

As endorsements go, a nod from New Orleans Mayor Mitch Landrieu for one of his potential successors could be double-edged.

Pretty much all elections after two terms under the same chief executive focus on change, even when the outgoing leader has had a successful record. And while the lead candidates in next month's mayoral primary give Landrieu credit in some areas, they're talking much more about what they'd do differently.

Still, Landrieu has bemoaned the fact that there's been little continuity between mayoral administrations in the past, and has said he'd like to support someone who would build on his legacy rather than go in a different direction.

Apparently he sees at least two people who could fit the bill.

Jeremy Alford's reported Tuesday that Landrieu's leadership committee, NOLA PAC, scheduled interviews this week with former Municipal Court Judge Desiree Charbonnet and LaToya Cantrell, who has served for much of Landrieu's tenure on the City Council. The letter Alford quoted omitted Michael Bagneris, the former Civil District Court judge who ran a harshly critical challenge against the mayor when he won reelection in 2014, as well as businessman Troy Henry, who ran against him in 2010.

Just how public or active Landrieu would be if he does pick a favorite is an open question. He'd certainly be able to steer resources in his chosen candidate's direction, but a mayoral nod would also force that person to defend Landrieu's record and prove her own independence.

As I said, double-edged.

Follow Stephanie Grace on Twitter, @stephgracela.