"I'm very grateful to have the support of Pennsylvania Greens in their state caucuses," Stein said in a news release. "Together with Minnesota and New York, this brings our campaign the support of all 20 states that have announced their delegates to date. The national Green Party is united as never before for a strong voice in the 2012 Presidential Election, at a time when the public has been clamoring for a principled alternative to the establishment parties that have brought us to the breaking point."

Chris Robinson, spokesperson for the Green Party of Philadelphia, shared the news Monday. The party conducted county caucuses throughout the spring. At the party's Pennsylvania convention in State College, Stein received the nomination.