Mayor Bill de Blasio this year has raised only $17,000 in campaign funds while the next two most powerful citywide officials brought in many times that amount, city Campaign Finance Board disclosures showed Wednesday.

The mayor, who has said he will seek a second term in 2017, received $17,350 in contributions to his campaign for an undeclared post in the six-month cycle, the filings showed. He has less than $3,400 cash on hand.

"We have not begun to fundraise for the 2017 campaign," de Blasio campaign spokesman Jonathan Rosen said in a statement. "This is an administrative account to cover nongovernmental political expenses."

Comptroller Scott M. Stringer, meanwhile, raised more than $429,000 and has more than $876,000 in cash on hand, his new filings showed.

Like de Blasio, Stringer's official campaign status is listed as undeclared.

The comptroller has flirted in the past with running for mayor, but campaign spokesman Tucker Green said Wednesday that Stringer would seek re-election.

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City Council Speaker Melissa Mark-Viverito had more than $297,000 in campaign contributions between Jan. 12 and July 11, her filings showed, and more than $144,000 cash on hand.

Mark-Viverito is term-limited from seeking re-election to the City Council, but when asked what she is raising funds for, her campaign would say only that she has not declared for an office.

Campaign finance funds can be used for nongovernmental expenses, such as speaking tours outside New York City, if the spending is approved by the city Conflict of Interest Board.

The other citywide official, Public Advocate Letitia James, had not filed her campaign finance disclosure as of early Wednesday evening. The filings were due at midnight.