The only statewide petitions submitted in Pennsylvania this year are from the Constitution, Green, and Libertarian Parties. Here is a story that says the Greens submitted 35,000 signatures. Some were turned in on July 31 and some on August 1, the deadline. The state requires 20,601 signatures.
The Constitution Party turned in 34,000 signatures; the Libertarian Party turned in 42,000 signatures.