"As in previous polling, the law [to dramatically increase the housing supply] is more popular with Democrats than with Republicans, with 76 and 55 percent support respectively."
https://sf.curbed.com/2019/5/17/18629809/sb-50-housing-trans...
https://sf.curbed.com/2019/5/17/18629809/sb-50-housing-trans...
The supermajority was irrelevant.