How many Stern fans really followed him to Sirius?

Maybe 1.3 million, says Bridge Ratings. And Dave Van Dyke finds "an apparent apathy" among those who've not already trailed him to Sirius. Bridge asked 3,200 Stern fans why they haven't yet subscribed and 26% said they were listening to their "second choice" show on terrestrial radio. 15% said they didn't miss Stern enough to shell out the $13 a month.