From Richard Winger at Ballot Access News:
Cheri Honkala, who was Jill Stein’s running mate in 2012, will be the Green Party nominee in a special legislative election in Pennsylvania on March 21. The 197th district seat is empty because the Democrat who won the seat in November 2016 resigned on December 16, 2016, before her new term had even started. She resigned because she had been indicated last year on a federal money laundering charge.
Honkala has been very active in North Philadelphia for many decades. This article explains why she feels she might conceivably win. The Green Party believes it will be able to raise enough money to make her competitive with her Democratic and Republican opponents.