A straphanger was stabbed on a Bronx subway platform late Tuesday – and then stumbled into a train car looking for help, cops and sources said. 
The unidentified victim – believed to be in his 30s – was knifed in the chest on the northbound B train platform at Bedford Park Boulevard around 10:15 p.m., authorities and sources said. 
The seriously injured victim ambled onto a B train, where he told other commuters that he’d just been stabbed, the sources said.
First responders rushed him to St. Barnabas Hospital, where his injury was initially described as critical – but by Wednesday afternoon, cops confirmed he was listed in stable condition. 
The motive for the knifing, and information on the fleeing attacker, remain unclear. 
The attack came days after the NYPD revealed that October set record lows for transit crime in the Big Apple.
There were 154 felony offenses reported on the rails last month, tying the previous record for the month set in 2020, when ridership hit historic lows during the COVID-19 pandemic.

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