I live in NY, and I already know that Clinton and Schumer will most likely oppose the nomination. They're usally on top of that sort of thing, plus I've already sent them e-mails. But what I think I should do is also send some to senators outside of my own state, ones that pose certain concern. And I will specify to them that I do not seek a "librel" candidate, but one who is fair and will interpret the laws in an intelligent and just fashion. One who seeks to deal with contemporary issues, not just she how many old rulings s/he can help overturn.
I don't think it's too much to ask.