Nobody's seen Sanders' dirty laundry yet, and everyone's been dirtying Clinton's laundry for her to try and discredit her for years. I agree with you about Sanders; he's drawing Hillary to the left just as Trump is drawing Republicans to the right (or, more accurately, into racist classist fantasy land).

I wasn't talking about signing petitions--they pretty much do jack-all. I'm talking about mailing lists where they email you about an issue that's on the table in congress, tell you why it's important, and then have a form for you to email your senator/representatives directly as their constituent to let them know where you stand. Those are a lot more effective. I'm on a couple of those for religious liberals, and one or two for just general liberals, though I don't remember the name offhand.