Green Party candidate Jill Stein will try to leapfrog into Monday’s first presidential debate at Hofstra University via social media if she is barred from attending or participating, her campaign said Saturday.

But that is still a fallback strategy for the physician candidate from Lexington, Massachusetts.

First, “hundreds” of her supporters, arriving via buses about 4:30 p.m. Monday, “will seek to escort Stein to the debate venue,” her campaign said.

If she “is prevented from participating in the debate,” there will be a “People’s Debate” outside the Hofstra venue at 5:30 p.m., followed by protests until 7 p.m., her campaign said.

Some Stein supporters plan to show their dissatisfaction with the debate organizers, the Commission on Presidential Debates, with “dignified, non-violent civil disobedience,” it said.

A spokesman for Libertarian presidential candidate Gary Johnson, a former Republican governor of New Mexico, and vice presidential candidate William Weld, a former Republican governor of Massachusetts, said that — as of Saturday night — the two candidates planned to “be live tweeting and watching from Twitter’s NYC offices in Chelsea.”

While Hillary Clinton and Donald Trump debate starting at 9 p.m., Stein will “participate in real time” with Twitter, on Periscope and live stream via Facebook Live on her Facebook page, her campaign said.

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The Commission on Presidential Debates said it rejected both Stein and Johnson because they failed to demonstrate 15 percent of voters supported them in national polls.

Johnson averaged 8.4 percent and Stein 3.2 percent, its website said.

“The criteria will be reapplied to all candidates in advance of the second and third presidential debates,” the commission added.