The Wisconsin Elections Commission confirmed on Twitter that it had received Stein's petition in advance of the deadline.
The third-party candidate raised more than $4.7 million of a $7 million goal in just two days, according to the candidate's site. Additional funding will pay for a recount in Michigan, the campaign says.
"Raising money to pay for the first two recounts so quickly is a miraculous feat and a tribute to the power of grassroots organizing," the site says. "In true grassroots fashion, we’re turning to you, the people, and not big-money corporate donors to make this happen."
Some Hillary Clinton supporters have called for a recount in the three states critical to Donald Trump's election victory earlier this month pointing to anomalies in voting data. The Clinton campaign has thus far declined to act on the call, but Stein, who was also on the ballot in those states, can also initiate such a process. The Stein campaign has said explicitly that its recount effort is not meant to aid Clinton.
Trump leads Clinton by less than 1 percentage point in Michigan and Wisconsin and by 1.2% in Pennsylvania, according to a New York Times report.