At a company I worked at in the past we had a "champions" rule:
1. First, only select few interviewers with a great track-record could be a "champion".
2. If this interviewer was going against the rest of the interview panel, they could choose to be that interviewee's "champion". This means they are essentially saying "I have such a strong conviction that this person will do well that I'll put my professional reputation on the line for them." E.g. this person agreed to be that person's mentor when they started, and if things went south they would carry the burden of additional mentorship or finding the least problematic way to fire that person.
1. First, only select few interviewers with a great track-record could be a "champion".
2. If this interviewer was going against the rest of the interview panel, they could choose to be that interviewee's "champion". This means they are essentially saying "I have such a strong conviction that this person will do well that I'll put my professional reputation on the line for them." E.g. this person agreed to be that person's mentor when they started, and if things went south they would carry the burden of additional mentorship or finding the least problematic way to fire that person.