That's why we have a quorum. Half of all seated Senators (51) are required to be present for the Senate to do business. For a House with no vacancies, half mean

That's why we have a quorum. Half of all seated Senators (51) are required to be present for the Senate to do business. For a House with no vacancies, half means 218 Representatives. So you're right; fishy "unanimous" votes can and do happen. A controversial measure might pass unanimously in a legislative body because all the opposition walked out in protest. This happened about a month ago in the 50-seat North Carolina Senate, which is dominated by Republicans. [1] [1] https://www.carolinajournal.com/news-article/senate-democrats-walk-out-of-vote-overturning-bathroom-ordinance/ https://www.carolinajournal.com/news-article/senate-democrat...