Mayor Bill de Blasio will launch his re-election campaign Thursday evening with a fundraiser at the Sheraton Times Square -- two years before the 2017 election.

His campaign did not immediately comment on the expected attendees and other details of what the invitation describes as a "kick off gala" at the midtown Manhattan hotel.

The Democrat had raised only $17,350 for 2017 in the six-month cycle leading up to July 15, the last city Campaign Finance Board reporting deadline, filings show. A campaign spokesman had said then that de Blasio's fundraising had not begun in earnest.

The 2017 campaigns of Public Advocate Letitia James, City Council Speaker Melissa Mark-Viverito and City Comptroller Scott M. Stringer by contrast had brought in about $191,000, $298,000 and $429,000, respectively, in the cycle, filings show.

All four officials have not and are not yet required to declare which office they may seek. De Blasio has said he will run again for mayor.

While de Blasio has not been filling his campaign war chest, a lobbying organization that supports his agenda -- Campaign for One New York -- had collected more than $1.7 million in contributions as of July 16, according to records that the nonprofit voluntarily disclosed.

Former Jets lineman and Harlem minister the Rev. Michel Faulkner has said he would seek the Republican nomination for mayor. He raised only $4,000 in the Jan. 12 to July 11 cycle.

De Blasio rival and Success Academy charter school network chief executive Eva Moskowitz announced earlier this month at City Hall that she would not be running against the mayor in 2017.