Originally Posted by
MLD51 
Because you are growing and changing, and they aren't. Even if your husband is a normie, he may feel afraid you are going to outgrow him somehow.
I agree with this. I take it that politics is a interest you share with him? And you might have many memories of the two of you sharing in it? He may be remembering the good elections and the conversations you had and wants to bring that back. Maybe he fears that the only way to engage you is with alcohol - because that is behavior he is used to. He may feel you don't want to talk politics with him anymore and if you don't want to do that then maybe you don't want him anymore.
Be firm with him and when he isn't supportive remember to act and not react. Instead of being fueled with rage and start a fight, tell him "No, I don't drink. Ever." And walk away.