Our Revolution, the political organization created by Sanders and former campaign officials a year ago, and the new Sanders Institute, a think tank and 501 (c)(3) tax-exempt nonprofit group, are also featured players at the gathering, which attracted more than 4,000 people to the McCormick Place convention center on the shore of Lake Michigan.
Vought wrote about his faith, and how, in his view, "Muslims do not simply have a deficient theology".
Outside Atlanta on Friday, Jon Ossoff offered a decidedly un-Sanders-like vision of the future in Georgia's Sixth Congressional District, a conservative-leaning patchwork of office plazas and upscale malls, where voters attended his campaign events wearing golf shirts and designer eyewear.
"Absolutely not Senator. I am a Christian and I believe in Christian set of principles based on my faith", Vought replied.
When the nominee again attempted to pose his response in the context of his religious beliefs, Sanders announced that he was finished and would be voting "no" on Vought's confirmation.
Sanders wasn't satisfied with this answer and repeated his question several times, but in each instance cut Vought off the moment he said that "I'm a Christian", the context in which he'd made the statement defending his alma mater. He argued that in a democracy people are allowed to disagree with one another on every matter, "but racism and bigotry - condemning an entire group of people due to their faith - can not be part of any public policy". "What about Jews? Do they stand condemned too?"
A spokesperson for Sanders said the senator is concerned whether or not Vought can "carry out the duties of his office in a way that treats all Americans equally".
"The Democratic Party needs fundamental change", Mr. Sanders said. "I will vote no". He suggested that religious beliefs should not be the basis of one's disqualification for public office, the Christian Broadcasting Network reports. The point of contention was a piece written by Vought in January 2016 where he claimed that only Christians had the right of entry into heaven, and others like Muslims, who had rejected Christ were "damned". "No one comes to the Father except through Me'".