What?
Marino had a young kid run against him (Nick Troiano) that gathered a lot of media attention in the district. Nick was an independent(left leaning) and only received 10% of the vote in a three way race. Many people actually thought he was going to win the election. Based upon this, I think if the right person primaried Marino they would have a chance at beating him. However, they need to do this outside of the local political groups.