Reward Good Behavior
It's a shame that our current political system relies as much as it does on money. Thankfully, though, there are ways now to make your money talk much more than it could before sites like Act Blue (or Red) existed. This is one of those times when a bit of talking money could amount to a shout; as Nate Silver demonstrates, Insurance Company money can play a large role in influencing Senators from smaller states who may not have a large, independent donor base. Showing them (by contributing to the good guys) that there is money out there for people who behave well is one of the strongest signals we can send in this environment. In fact, I think the days of wholly-owned Senators may be drawing to a close due to these sorts of democratic ways to give money. We're not there yet, but the "people" already bought a President (he raised $342 million from donors who gave under $1000 total to the campaign).