Former House Speaker Nancy Pelosi is going against retiring Rep. Steny Hoyer in the race to replace him in Maryland, teeing up what could be the last clash between the two Democratic powerhouses in their decadeslong and sometimes-frosty relationship.

Pelosi on Wednesday will endorse Harry Dunn, a former Capitol Police officer who rose to prominence testifying about the horrors of the Jan. 6 riot, in the crowded primary to succeed Hoyer, according to details shared first with Blue Light News.

The California lawmaker and daughter of a powerful Baltimore family hailed Dunn’s courage and leadership during and after the Capitol attack.

“My friend Harry Dunn is a true American hero and exactly the right person to represent Maryland in Congress,” Pelosi said. He “bravely defended our democracy from Donald Trump’s violent MAGA mob. Since then, Harry’s been called to do everything he can to protect Marylanders and all Americans from extremists like Donald Trump.”

Pelosi’s loyalty to Dunn — she also backed his unsuccessful bid for Congress in 2024 — is again pitting her against Hoyer in their shared home state after the two backed different candidates for governor in 2022. Hoyer, Pelosi’s longtime No. 2 and erstwhile opponent, is backing his one-time political aide, state Del. Adrian Boafo, for the seat he’s vacating after more than four decades.

Dunn entered the race after Hoyer made his endorsement. A Hoyer spokesperson declined comment.

The dueling endorsements serve as a capstone of sorts to the decadeslong relationship and rivalry between Pelosi and Hoyer that dates back to their time as Hill interns and spans multiple leadership races as they each prepare to retire next year. The two top Democrats have battled each other politically for years — Pelosi defeated Hoyer to become House Democratic whip in 2001, while Hoyer bested her pick for majority leader in 2006 — though they eventually formed an effective partnership leading their caucus.

Dunn, in an interview, praised Pelosi as a pillar for defending democracy and taking on Trump — saying her efforts remind him of his own crusade for accountability after Jan. 6.

“Anytime that somebody with the stature and political history [of] Nancy Pelosi puts their support behind me, it’s just like ‘wow,’” Dunn said. “It just means a lot to me and that should also resonate with the people that have seen how effective she has been for decades as a fighter.”

Dunn launched a failed bid for Maryland’s 3rd Congressional District in 2024, in which he was unable to overcome millions of dollars in spending by pro-Israel group AIPAC’s super PAC to boost now-Rep. Sarah Elfreth.

He entered the race for Hoyer’s seat last month and raised $1 million over the opening eight days of his new campaign, his team said. Dunn does not currently live in the 5th District, which stretches from the suburbs east of Washington into southern Maryland and includes Prince George’s County, where he was born. But he said he plans to move back from the 8th District if he wins. Whoever emerges from the Democratic primary that’s drawn at least a dozen candidates for Hoyer’s safely blue seat will be the heavy favorite to win in November.

Pelosi and Dunn have developed a close personal relationship since Jan. 6, when Dunn faced off with Oath Keepers outside her office and endured a barrage of racial attacks — both of which he has recounted in highly publicized hearings.

Dunn, who has become outspoken about the lingering trauma he and other officers are dealing with from the riot, described the pair on Tuesday as “good friends” bonded by the attack and its aftermath. He is also among the officers who Pelosi gathers with for lunch on each Jan. 6 anniversary, according to a person familiar with the event and granted anonymity to share details of it.