Among those issued subpoenas by congressional investigators probing the Jan. 6 attack on the U.S. Capitol is a Donald Trump campaign aide who made a call to a Michigan lawmaker urging an effort to block the state’s Electoral College votes for President Joe Biden.

According to the House select committee overseeing the process, a voice mail from Angela McCallum (pictured above) to the unidentified lawmaker said: “You do have the power to reclaim your authority and send a slate of electors that will support President Trump and Vice President Pence.”

She said she was calling from Trump campaign headquarters “on behalf of the president.”

McCallum, a 2019 college graduate from South Carolina, had been a low-profile figure in the Trump re-election campaign prior to the newest round of subpoenas issued on Monday. She reportedly scrubbed her Twitter account immediately after her link to the investigation was announced.

The call dates back to early December 2020 when the pro-Trump “stop the steal” protests, falsely claiming widespread election fraud, had gained momentum.

On Dec. 14, when the Legislature met in Lansing to oversee the official casting of ballots by Michigan’s 16 electors for Biden, Republican protesters tried to enter the premises, the Senate Office Building, through a side door to present a rogue set of GOP electors for Trump.

A state trooper blocked their entrance, saying that he was acting on behalf of the (Republican-led) House and Senate. Leading the charge that day was Meshawn Maddock, who later became the state Republican Party co-chair.

The failed attempt to circumvent Michigan voters came after Biden won the state by 154,188 votes, a 2.8 percent point margin.

McCallum as a White House intern and rose to the post of national executive assistant of Election Day operations at the Trump 2020 re-election campaign. She had also served the campaign as its coordinator of outreach to elected officials.

The scope of McCallum’s pressure campaign aimed at state legislators was not revealed by officials on Capitol Hill. Her call cited in the subpoena was made in a monotone voice, as if reading from a script, suggesting it may have been one of many such calls.

If McCallum complies with the subpoena Monday, the deadline to submit documents in her defense is Nov 23. Her deposition is currently slated for Nov 30.