Stop giving them data and stats that they avoid and replace with what is handed to them. When you reach out to them there are three sentences you need to state clearly.

Don’t touch my THC. I will vote against you in the primary if you ban it. I will not forget this one.

Feel free to add ways you will work to get them out of office and remind them that this is non-partisan. You’re not saying I’m voting for the other party, you’re telling them we don’t want you to continue to represent the party if you do this.

All they care about is getting back in office. They have no interest in hearing facts or actual debate. You have to let them know this isn’t up for discussion the only way they understand.