Care to share where you got the demo ballot from? Is it at the polls or online? I have a Ballot Sample which I got online after entering my voter info, not sure if this is what you're referring to.
If you don't know who to vote for and want to be prepared, you can get a Sample Ballot online. You enter your address and chose either Rep. or Dem. Ballot and on it you will have everyone you can vote for. Be prepared!