Democrat Vincent Gentile blasted opponent Dan Donovan for cutting the event short.
Diana Durand was sentenced to three months for using straw donors to boost Grimm's 2010 war chest.
The NYPD Captains Endowment Association and Lieutenants Benevolence Association backed Donovan.
Judge Pamela Chen denied Grimm's motion to travel to Europe.
Grimm's lawyers filed a motion to allow the former congressman to travel.
The Staten Island Democratic Party announced Brooklyn's Vincent Gentile is its candidate.
A special election will be held May 5 to replace Michael Grimm and Karim Camara.
A federal judge ruled that Gov. Cuomo had until Feb. 20 to set a date for the election to fill the seat.
The assemblyman said he won't seek the Democratic ticket for the vacant seat.
The city says in a lawsuit that a Hell's Kitchen building has been used as an illegal hotel since 2013.
Daniel Donovan recused himself from 23 cases in the past two years because of his or his office's ties.
A coalition of Republicans encouraged Dan Donovan to run.
The Republican congressman announced he would resign from his post on Jan. 5.
The congressman pleaded guilty to underreporting profits and wages at an eatery he co-owned.
The congressman will plead guilty to hiding profits at an Upper East Side restaurant he owned.
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