Dear Senator Sanders,
I'm a fan. You're great on the radio and you're right (that is, I agree with you) about many things. I'm glad you're a Senator and hope you keep your job as long as you want it.
That being said, you're not a member of my political party, and the business of nominating our presidential candidate is, therefore, none of your business. We can create all the trouble we can handle internally. Please don't feed the trolls.