You know your husband better than anyone on this thread & you will know if he is a racist or not.
If you know he is not , there should be no issue about who he voted for.
People will differ on their feelings for each party , Green V Conservative, Labour V lib dem etc & etc...... Reforn V Conservative, Reform V every other party ?
You may not agree with his choice of politcal party , but you may also disagre with his other preferences ie food , alcohol, music , work ethic, parenting , domestic habits , parenting , sport , hobbies , books , views on equality , choice on film so many things ......
Voting for a political party , should not be a deal breaker. It depends on the whole package.
I have friends from all political parties , I don't have friends that are ; racist , sexist , violent , cruel & hopefully not biggoted , as all these things would be the deal braker for me....... & if I found out that they had these negative bad qualities, I would ditch them.
As I said, you know the man & what he is like.