Atlantic City’s Mayor Marty Small Sr. is expected to cruise to reelection — but will go on trial for allegedly abusing his teenage daughter next month, which could prevent him from taking office.

The beleaguered Dem is facing a challenge from Republican Naeem Khan, a Garden State native and businessman who is seeking office because of “how badly [Atlantic City] is being managed,” according to his campaign website.

If he wins as expected Tuesday, Small, 51, will be sworn into court on Dec. 1 — facing a slew of abuse charges — before he takes office in January.

He will appear in court alongside his wife La’Quetta Small, Newark’s superintendent of schools, in connection to several caught-on-video incidents in which they allegedly beat and choked their 16-year-old daughter unconsciou

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