Keep trying, Gravis, you'll get it right eventually. Let's wait until an accurate, non-partisan pollster polls this race before jumping to conclusions. And even then, both Masto and Heck still aren't that well known.
I would laugh if SurveyUSA or Suffolk showed a large lead for Heck as well. 2/3 polls give Heck a large lead at the moment. Compared to the PPP poll we have to assume then at the very least Heck has a 6-9 point lead if you average them out. It is plausible due to the media market he is in and the proximity of his congressional district in the market.