POLITICO Playbook: How much will John Fetterman’s rocky night matter?

 POLITICO Playbook: How much will John Fetterman’s rocky night matter?

With help from Eli Okun and Garrett Ross
John Fetterman takes part in a campaign event in York, Pa., on Saturday, Oct. 8. | Matt Rourke/AP Photo
DRIVING THE DAY
Lets state the obvious:JOHN FETTERM…