I hope you're aware that next Tuesday, April 30th is Special Election Primary Day in Massachusetts that will determine who'll run in the U.S. Senate Final election on June 25. Do you know enough about the candidates to make an informed choice?

Do you see a big difference between the contenders? If you need to catch up, CBSBoston.com has video of recent on-air debates. Today, I'll start with the two Democratic challengers, Stephen Lynch and Ed Markey. Please vote as to which one in your opinion will win next week.