OP, in answer to your question, I dont think you should shy away from volunteering for any cause you would support just b/c you have kids. Of course take into consideration what you would actually be able to safely and reasonably accomplish, and proceed accordingly. I have a 4yo dd and a 7mo ds and I bring them with me to the local NARAL office to help with data entry, sign making, phone calls, etc as well as signature gathering at summer festivals. I have phone banked with Planned Parenthood with them. And I have phone banked with Moveon.org and the local Obama office with them too. We're always welcomed with open arms. Bring something fun for your kiddies to do while you are occupied and I bet things would be fine. If you feel unsure, you could always ask the volunteer organizer first, but I would bet, most people would be stoked to have your kids accompany you.