I feel like it is a cop-out to say this, but I will: be an informed voter. I will make sure that my ballot makes it to whatever address I am at and I fill it out fully (and remember to mail it, of course). I will research the candidates and issues thoroughly, so I know that I am choosing people who will represent my interests. If in doubt, I will consult websites and voter guides that I trust. I will also question any statement that seems unclear and I will, in the end, think for myself when I vote. I will give my ballot the full extent of my attention until I am finished filling it out.
If a particular candidate gets my attention by their actions for or against choice, I will be sure to note that, and write on it if it has not gotten sufficient media coverage already. I will make sure that my friends know my stance on these candidates, whether it be for or against. If I get the chance I will do any meet and greets I can with local politicians to see if their in-person persona matches their political, public persona.