Arizona fake electors led vocal campaign to overturn the 2020 election -- they're now part of a 'robust' state investigation

They called it "The Signing." Eleven fake electors for President Donald Trump convened at the state Republican Party headquarters in Phoenix, Arizona, on December 14, 2020. They broadcast themselves preparing to sign the documents, allegedly provided by a Trump campaign attorney, claiming that they were the legitimate representatives of the state's electoral votes.

By that time, Trump's loss in the state - by less than 11,000 votes - had already been certified by the state's Republican governor affirming that Joe Biden won Arizona in the 2020 presidential election.

But in the weeks that followed, five of Arizona's 11 "Republican electors," as they called themselves, pushed an unusually vocal campaign, compared to other fake electors from states across the country, for Vice President Mike Pence to reject the legitimate Democratic slate of electors.

Instead, they called on Pence to accept them or no electors at all, according to a CNN KFile review of their interviews, actions and comments on social media.

Much attention has been drawn to the fake elector schemes in Georgia and Michigan where local and state authorities charged some participants for election crimes this past summer. But in no other state were there fake electors more active in publicly promoting the scheme than in Arizona.

Now those fake electors find themselves under new legal scrutiny as the Arizona attorney general announced a broad investigation into their actions and their public campaign that could open the electors up to increased legal liability, according to experts who spoke with CNN.

"They were more brazen," Anthony Michael Kreis, an expert on constitutional law at Georgia State University told CNN. "There is no difficulty trying to piece together their unlawful, corrupt intent because they publicly documented their stream of consciousness bread trail for prosecutors to follow."