In a letter to his supporters Friday, Assemblyman Marcos Crespo announced that he is leaving elected office.
"I have decided not to seek re-election, but instead pursue opportunities outside of government that will allow me to continue to serve my community," he said.
Sources say Crespo is headed to Montefiore Medical Center for a lucrative job offer.
"I believe he is getting an offer that he cannot refuse," Democratic Bronx Councilman Rubén Díaz Sr. said. "He's young, he's smart, he is intelligent. He has done a great job as an Assembly member."
Crespo will also step down as the powerful county leader, responsible for helping choose which candidates can run for office with the backing of the organization and its resources.
Crespo's announcement comes just a few weeks after his close ally and friend, Bronx Borough President Ruben Diaz Jr., announced he will not run for mayor in 2021. Crespo had been planning to run to replace him as borough president.
The news set off a scramble of speculation about who will run for which opening and what larger multi-piece deal may be in the works. Insiders say both City Councilman Rafael Salamanca and Assemblywoman Nathalia Fernandez are now planning to run for borough president.
And sources say Assemblyman Victor Pichardo is interested in assuming the position of county leader, which will be voted on by the district leaders.
Crespo got his start working for Diaz Sr., the father of Ruben Díaz Jr. Díaz Sr. noted that Crespo and many others got their start in his office.
"They all have been working for me," Díaz Sr. said. "So I'm proud of the opportunity that I have gotten to develop leadership in the Bronx."
The question now becomes, what will Diaz Jr. do? People familiar with the situation say he may resign from the borough president's job early, which would pave the way for a special election. That would allow Bronx Democrats to help elect their preferred candidate early, who could then run as an incumbent next year rather than for an open seat.