Polls show we're not doing our job

This morning, North Country Public Radio just did a news brief, about 30-ish seconds, about (what else) a pol -- this time,l showing that hardly any New Yorkers knew anything about the primary challengers to NY Democratic US Sen. Kirsten Gillibrand. I have heard similar polls relating to Massachussetts' Democratic US senate candidate Elizabeth Warren's primary challengers. Is it possible that this is because the mainstream media refuses to do any actual reporting on said primary challengers?