I don’t think this is the same as the 2020 Election, because the votes remaining were in Camden and Newark when Ciattarelli was only ahead by a little. Bergen County may have had fraud, because Murphy increased his vote total in a Republican leaning county from 2017, and I don’t think he did that in other counties.
Bergen went from nearly 57% Democrat to 52% Democrat.
Bergen voted Democrat in every Governor’s race since 1997, with the sole exception of 2013.
Bergen hasn’t voted Republican in a Presidential race since 1992.
The 52-47 margin was the narrowest since 2009, when Christie won the State but still lost Bergen.
Bergen is not and has never been “Republican leaning” at least since 1992.