Rep. Nancy PelosiNancy Patricia D'Alesandro PelosiDonald Trump proved himself by winning fight for border security Trump should beware the 'clawback' Congress The national emergency will haunt Republicans come election season MORE (D-Calif.) is running for another term in Congress.

The Democratic leader's future, a perennial topic of discussion in Washington, came into question once again Thursday with news that Rep. Henry WaxmanHenry Arnold WaxmanFeehery: Lessons learned from John Dingell Former Rep. John Dingell dies at 92 After Congress, staying in the fight MORE (D-Calif.), one of her closest confidants, will retire at the end of the year.

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Those close to Pelosi insist she wouldn't follow suit, citing her rampant pace on the fundraising trail that's led to a record haul for the Democrats this Congress.

The announcement of Waxman's exit came just weeks after Rep. George Miller (D-Calif.), another close ally to the House minority leader, announced his retirement plans. 

With some of her top lieutenants on their way out, it's fueled speculation the former Speaker is also headed for the exits. But that's a notion Pelosi is trying to nip in the bud.

"I'm running. I've already started the paperwork process," she said Thursday in an email. "My work is not finished."

Pelosi is famously private about her future plans, ever insisting that she's focused on the current year's business — both the politics and the policy — but not beyond.

She defied the prognosticators who thought she would step out of leadership after the disastrous 2010 elections, which saw the Democrats lose 63 seats and control of the Speaker's gavel. And Pelosi disregarded the skeptics once more in 2012, when the Democrats picked up eight seats but not enough to retake the lower chamber.

By announcing her intention to seek reelection this year, Pelosi has not precluded the possibility of resigning after the midterms. Still, a number of Democratic sources on and off Capitol Hill are guessing a potential presidential run by former Secretary of State Hillary ClintonHillary Diane Rodham ClintonRoger Stone shares, quickly deletes Instagram photo of federal judge on his case Barack, Michelle Obama expected to refrain from endorsing in 2020 Dem primary: report Why the national emergency? A second term may be Trump’s only shield from an indictment MORE would keep Pelosi around at least through 2016. 

"The first woman Speaker of the House would want to help the first woman president of the United States," said one Democratic aide. "I don't see anything that shows she's heading for the exits."