The New Jersey Democrat will head to South Carolina Friday for the first of two events in the key presidential state.

Cory Booker will declare his 2028 presidential candidacy in Bergen tonight, a Bergen insider cracked shortly before the polls closed at 8 p.m. On the other side of eight, Booker pocketed the perfunctory statewide sweat-free victory in an utterly uneventful contest, knocking off Republican nominee Justin Murphy.…