PHILADELPHIA — Democrats will again hold on to their majority in the Pennsylvania House, according to early returns in a special election Tuesday in Lower Bucks County. Jim Prokopiak won the special election and reaffirmed Democrats’ one-seat majority in the state House, according to The Associated Press, which called the race for him at 8:07 p.m. Eastern time, just after polls closed. Prokopiak — who will represent Falls Township, Tullytown, Morrisville and parts of Middletown Township — was running against Republican Candace Cabanas to fill a vacancy created by longtime Democratic Rep. John …