Fetterman is leading because Governor Wolf of Pennsylvania is offering bribes to the populous in so that they will vote for democrats.
"Gov. Wolf: $2,000 Direct Payments to Pennsylvanians
‘Will Make a Life-Changing Difference for Families in
Communities Across the Commonwealth’"
https://www.governor.pa.gov/newsroom...-commonwealth/
It's the same thing that happened when the democrats bought the two Georgia
senators a couple of years ago by promising more stimulus money.