The Albert and Mary Lasker Foundation has sent a questionnaire to Congress to ask how our senators and representatives stand on health issues. To find out where your elected officials stand, check Where Does Congress Stand?
In the event your senators, like both of my Texan senators, have not yet completed the questionnaire, you can still check on their voting habits. I thought it was interesting to see who missed votes, and how many they missed.
For specific roll call votes, try the Senate Reference or the Congress Votes Data Base.