I did it a year ago and the Republiboobs keep on sending me mail soliciting money.
How much money do they waste this way?
Send them $1 a year. It will cost them more than a dollar to process your "donation", then they'll keep wasting money on you with solicitations for years. Bleed them, for a change. YOu can also take their post-paid envelopes, wrap them around a brick, and mail them back.