Dr. Joe Heck Losing To Dr. Titus

In a poll out today by the LVRJ and Channel 8, it shows that Heck is losing to Dina Titus 42-40%. This poll was conducted by the Mason-Dixon polling company.
http://www.lvrj.com/news/titus-has-heck-on-her-heels-98695594.html
I am kind of surprised that Heck is losing, but considering that the poll is being run by Mason-Dixon, I have a sneaky suspicion that the race is actually closer and in fact, Heck is winning. I base this on Mason-Dixon tends to lower GOP numbers and raise Dem's numbers. (see the poll by Mason-Dixon in the Angle-Reid race)
But, the race is far from over and it seems like Heck has a very good organization on the ground and he is using his supporters, unlike the Angle campaign.
I still say Heck wins by 5% over Titus in November.