Two organizations, Democracy for America and Mark Warner's Forward Together PAC, are conducting an online vote right now to determine which progressive candidates will receive a donation from their respective committees. Coleen Rowley (Minnesota Democratic congressional candidate in CD2) has been chosen as a candidate for both. This is grassroots at its best, and it costs you nothing to participate.
Visit their site and vote for Coleen. Better yet, encourage friends and family to do the same. It's that easy. This is strictly a numbers game: the top vote recipients move on to the next round. So go vote!
Forward Together PAC (you must register first): http://www.forwardtogetherpac.com/mapchangers