Police are searching for the man who allegedly pushed a stranger into the subway tracks at Union Square during Wednesday morning's rush hour.

The victim, a 64-year-old man, survived the unprovoked shove into the uptown N/Q tracks at around 9:10 a.m.

Power was cut to the track's third rail, and the train operator of an incoming R train was informed of the situation as the man was pulled from the tracks.

A spokesperson for the NYPD confirmed that he was likely to survive, but did not have further information about his condition.

The alleged attacker was last seen wearing a red jacket and red shirt, police said.

In a separate incident, an 80-year-old man was fatally struck by a 6 train at Astor Place on Monday afternoon, after trying to recover an item from the tracks, according to the MTA.