Ed Markey’s New Gun-Control Ad — Does it Help or Hurt Him?

Ed Markey is currently running for United States Senate for Massachusetts. One of the biggest questions right now is what to do about gun-control.

A new political ad by Markey has him on the side of tougher gun laws, which will get votes from those people. Will it hurt his chances of getting votes from people who aren't in favor of tougher gun-control by taking such a harsh stance on guns?