If you mean passing popular vote amendments, I think 32 states have passed them.
There were some states that only passed their amendments in the 50% ranges in the last decade or so. More passed them by at least 70% or much more. Some of the ones that passed in the low 50% ranges 5+ years ago are probably repealable by another popular vote now. But then there are states like PA and WVa, where they don’t have an amendment but at least WVa seems pretty far from accepting ‘gay marriage’ at least by politician or popular vote.
The states that don’t have amendments and don’t have ‘gay marriage’ as far as I can tell:
Minnesota—voted down a marriage amendment in 2012
Indiana—started process for amendment ban
PA—started process for amendment ban
WVa—tried to start ban ballot, but couldn’t start the process, both housed controlled by dems according to wiki
Wyoming
New Mexico
I added that up 11 gay marriage, 32 pro-marriage amendments, 6 with neither and I am missing one somehow.
Freegards
The 11 “gay marriage” includes D.C., I think.