By Patricia Zengerle

WASHINGTON, (Reuters) – A former campaign manager of ex-President Donald Trump, as well as former officials from Atlanta, Philadelphia, and other states will be testifying on Monday before the U.S. Congress committee that is investigating the attack on Capitol on Jan. 6, 2021. The committee announced on Sunday.

After a record-breaking session Thursday night, the Select Committee of the U.S. House of Representatives will host its second public hearing on Monday at 10:00 EDT (1400 GMT).

Monday’s hearing, which is the second in a series of six, will be focused on former Republican President Joe Biden’s claim that his loss to Democrat Joe Biden during the November 2020 election resulted from unfounded claims of election fraud. The so-called “Big Lie”

William Stepien will be the first witness at the hearing. He was previously Trump’s White House Director for Political Affairs between 2017 and 2018.

Chris Stirewalt (an ex-political editor at Fox News) will also be a witness on the first panel.

Ben Ginsberg (conservative Republican election attorney); BJay Pak, who resigned in Atlanta as Trump’s U.S. attorneys seeking to overturn the results in Georgia; Al Schmidt (alone Republican on Philadelphia’s elections board) who became an attack target for Trump when he protected the integrity and validity of the 2020 presidential ballot.

Georgia and Pennsylvania were both states that backed Trump’s 2016 election. However, they fell in Biden’s column for 2020. These two states have been the focus of unfounded allegations of electoral fraud.